INDENTURE

Exhibit 4.2

EXECUTION COPY

CHART INDUSTRIES, INC.

$170,000,000

9 ¹ / ₈ % SENIOR SUBORDINATED NOTES DUE 2015

INDENTURE

Dated as of October 17, 2005

THE BANK OF NEW YORK

Trustee

CROSS-REFERENCE TABLE*

N.A. means not applicable.

* This Cross Reference Table is not part of this Indenture.

TABLE OF CONTENTS

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          INDENTURE dated as of October 17, 2005 among Chart Industries, Inc., a Delaware corporation (the “ Company ”), the Guarantors (as defined herein) and The Bank of New York, a New York banking corporation, as trustee.

          The Company, the Guarantors and the Trustee agree as follows for the benefit of each other and for the equal and ratable benefit of the Holders (as defined herein) of (a) the $170,000,000 aggregate principal amount of the Company’s 9 ¹ / ₈ % Senior Subordinated Notes due 2015 (the “ Initial Notes ”), (b) any Additional Notes (as defined herein) that may be issued after the date hereof and (c) if and when issued pursuant to the Registration Rights Agreement (as defined herein), the Company’s Exchange Notes (as defined herein) issued in the Registered Exchange Offer (as defined herein) in exchange for any outstanding Initial Notes or Additional Notes (all such securities in clauses (a), (b) and (c) being referred to collectively as the “ Notes ”):

ARTICLE 1

DEFINITIONS AND INCORPORATION BY REFERENCE

Section 1.01 Definitions .

          “ 144A Global Note ” means a Global Note substantially in the form of Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of, and registered in the name of, the Depositary or its nominee that will be issued in a denomination equal to the outstanding principal amount of the Notes sold in reliance on Rule 144A.

          “ Acquired Debt ” means, with respect to any specified Person:

     (1) Indebtedness of any other Person existing at the time such other Person is merged with or into or became a Restricted Subsidiary of such specified Person, whether or not such Indebtedness is incurred in connection with, or in contemplation of, such other Person merging with or into, or becoming a Restricted Subsidiary of, such specified Person; and

     (2) Indebtedness secured by a Lien encumbering any asset acquired by such specified Person.

          “ Additional Interest ” means all Additional Interest then owing pursuant to the Registration Rights Agreement.

          “ Additional Notes ” means additional Notes (other than the Initial Notes) issued under this Indenture in accordance with Sections 2.02 and 4.09 hereof, as part of the same series as the Initial Notes.

          “ Affiliate ” of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For purposes of this definition, “control,” as used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of such Person, whether through the ownership of voting securities, by agreement or

otherwise. For purposes of this definition, the terms “ controlling ,” “ controlled by ” and “ under common control with ” have correlative meanings.

          “ Agent ” means any Registrar, co-registrar, Paying Agent or additional paying agent.

          “ Applicable Premium ” means, with respect to any Note on any redemption date, the greater of:

     (1) 1.0% of the principal amount of the Note; or

     (2) the excess of: (a) the present value at the redemption date of (i) the redemption price of the Note at October 15, 2010 (such redemption price being set forth in the table appearing in Section 3.07(c) hereof) plus (ii) all required interest payments due on the Note through October 15, 2010 (excluding accrued but unpaid interest to the redemption date), computed using a discount rate equal to the Treasury Rate as of such redemption date plus 50 basis points; over (b) the principal amount of the Note.

          “ Applicable Procedures ” means, with respect to any transfer or exchange of or for beneficial interests in any Global Note, the rules and procedures of the Depositary, Euroclear and Clearstream that apply to such transfer or exchange.

          “ Asset Acquisition ” means:

     (1) an Investment by the Company or any Restricted Subsidiary of the Company in any other Person pursuant to which such Person shall become a Restricted Subsidiary of the Company or any Restricted Subsidiary of the Company, or shall be merged with or into or consolidated with the Company or any Restricted Subsidiary of the Company; or

     (2) the acquisition by the Company or any Restricted Subsidiary of the Company of the assets of any Person (other than a Restricted Subsidiary of the Company) which constitute all or substantially all of the assets of such Person or comprise any division or line of business of such Person or any other properties or assets of such Person other than in the ordinary course of business.

          “ Asset Sale ” means:

     (1) the sale, lease, conveyance or other disposition of any assets or rights; provided that the sale, lease, conveyance or other disposition of all or substantially all of the assets of the Company and its Restricted Subsidiaries taken as a whole will be governed by Section 4.15 hereof and/or Section 5.01 hereof and not by Section 4.10 hereof; and

     (2) the issuance or sale of Equity Interests in any of the Company’s Restricted Subsidiaries.

          Notwithstanding the preceding, none of the following items will be deemed to be an Asset Sale:

     (1) any single transaction or series of related transactions that involves assets or Equity Interests of any Restricted Subsidiary having a Fair Market Value of less than $5.0 million;

     (2) a transfer of assets between or among the Company and any of its Restricted Subsidiaries;

     (3) an issuance or sale of Equity Interests by a Restricted Subsidiary of the Company to the Company or to another Restricted Subsidiary of the Company;

     (4) the sale or lease of inventory, products or services or the lease, assignment or sub-lease of any real or personal property in the ordinary course of business;

     (5) the sale or discounting of accounts receivable in the ordinary course of business;

     (6) any sale or other disposition of damaged, worn-out, obsolete or no longer useful assets or properties in the ordinary course of business;

     (7) any sale of assets received by the Company or any of its Restricted Subsidiaries upon the foreclosure on a Lien;

     (8) the sale or other disposition of cash, Cash Equivalents or Marketable Securities;

     (9) a sale of accounts receivable and related assets of the type specified in the definition of “Receivables Financing” to a Receivables Subsidiary in a Qualified Receivables Financing;

     (10) a transfer of accounts receivable and related assets of the type specified in the definition of “Receivables Financing” (or a fractional undivided interest therein) by a Receivables Subsidiary in a Qualified Receivables Financing;

     (11) a Restricted Payment that does not violate Section 4.07 hereof or any Permitted Investment;

     (12) any sale of Equity Interests in, or Indebtedness or other securities of, an Unrestricted Subsidiary;

     (13) the granting of Liens not otherwise prohibited by this Indenture;

     (14) the surrender, or waiver of contract rights or settlement, release or surrender of contract, tort or other claims; and

     (15) any exchange of assets related to a Permitted Business of comparable market value, as determined in good faith by the Company.

          “ Bank Agent ” means the agent for the lenders under the Credit Agreement or its successors as agent for the lenders under the Credit Agreement.

          “ Bankruptcy Law ” means Title 11, U.S. Code or any similar federal or state law for the relief of debtors.

          “ Beneficial Owner ” has the meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act), such “person” shall be deemed to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable only after the passage of time. The terms “Beneficially Owns” and “Beneficially Owned” have a corresponding meaning.

          “ Board of Directors ” means:

     (1) with respect to a corporation, the board of directors of the corporation or any committee thereof duly authorized to act on behalf of such board;

     (2) with respect to a partnership, the Board of Directors or other governing body of the general partner of the partnership;

     (3) with respect to a limited liability company, the Board of Directors or other governing body, and in the absence of the same, the manager or board of managers or the managing member or members or any controlling committee thereof; and

     (4) with respect to any other Person, the board or committee of such Person serving a similar function.

          “ Broker-Dealer ” has the meaning set forth in the Registration Rights Agreement.

          “ Business Day ” means a day other than a Saturday, Sunday or other day on which banking institutions are authorized or required by law to close in New York State.

          “ Capital Lease Obligation ” means, at the time any determination thereof is to be made, the amount of the liability in respect of a capital lease that would at that time be required to be capitalized on a balance sheet (excluding the footnotes thereto) prepared in accordance with GAAP.

          “ Capital Stock ” means:

     (1) in the case of a corporation, corporate stock;

     (2) in the case of an association or business entity that is not a corporation, any and all shares, interests, participations, rights or other equivalents (however designated) of corporate stock;

     (3) in the case of a partnership or limited liability company, partnership interests (whether general or limited) or membership interests; and

     (4) any other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person, but excluding from all of the foregoing any debt securities convertible into Capital Stock, whether or not such debt securities include any right of participation with Capital Stock.

          “ Cash Contributions ” means the aggregate amount of cash contributions made to the capital of the Company or any Guarantor described in the definition of “Contribution Indebtedness.”

          “ Cash Equivalents ” means:

     (1) United States dollars or, in the case of any Foreign Subsidiary, such local currencies held by it from time to time in the ordinary course of business;

     (2) securities issued or directly and fully guaranteed or insured by the United States government or any agency or instrumentality of the United States government ( provided that the full faith and credit of the United States is pledged in support of those securities) having maturities of not more than one year from the date of acquisition;

     (3) certificates of deposit, time deposits and eurodollar time deposits with maturities of one year or less from the date of acquisition, bankers’ acceptances with maturities not exceeding one year and overnight bank deposits, in each case, with any lender party to the Credit Agreement or with any domestic commercial bank having capital and surplus in excess of $500.0 million and a rating at the time of acquisition thereof of P-1 or better from Moody’s or A-1 or better from S&P;

     (4) repurchase obligations for underlying securities of the types described in clauses (2) and (3) above entered into with any financial institution meeting the qualifications specified in clause (3) above;

     (5) commercial paper having one of the two highest ratings obtainable from Moody’s or S&P and, in each case, maturing within one year after the date of acquisition;

     (6) securities issued or fully guaranteed by any state or commonwealth of the United States, or by any political subdivision or taxing authority thereof having one of the two highest ratings obtainable from Moody’s or S&P, and, in each case, maturing within one year after the date of acquisition;

     (7) money market funds at least 95% of the assets of which constitute Cash Equivalents of the kinds described in clauses (1) through (5) of this definition;

     (8) Indebtedness or preferred stock issued by Persons with a rating of “A” or higher from S&P or “A-2” from Moody’s; and

     (9) in the case of any Foreign Subsidiary, investments denominated in the currency of the jurisdiction in which that Foreign Subsidiary is organized or has its principal place of business, which are similar to and have similar ratings from similar rating agencies to the items specified in clauses (2), (3), (4), (6), (7), and (8).

  “ Change of Control ” means the occurrence of any of the following:

     (1) the direct or indirect sale, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or a series of related transactions, of all or substantially all of the properties or assets of the Company and its Restricted Subsidiaries, in each case, taken as a whole, to any “person” (as that term is used in Section 13(d)(3) of the Exchange Act), other than the Permitted Holders;

     (2) the adoption of a plan relating to the liquidation or dissolution of the Company;

     (3) the consummation of any transaction (including, without limitation, any merger or consolidation), the result of which is that any “person” or “group” (as such terms are used in sections 13(d) and 14(d) of the Exchange Act), other than the Permitted Holders, becomes the Beneficial Owner, directly or indirectly, of more than 50% of the voting power of the Voting Stock of the Company; or

     (4) the first day on which a majority of the members of the Board of Directors of the Company are not Continuing Directors.

          “ Clearstream ” means Clearstream Banking, S.A. and any successor thereto.

          “ Company ” means Chart Industries, Inc., a Delaware corporation and any and all successors thereto.

          “ Consolidated Cash Flow ” means, with respect to any specified Person for any period, the Consolidated Net Income of such Person for such period (A) plus , without duplication to the extent the same was excluded in calculating Consolidated Net Income:

     (1) provision for taxes based on income, profits, losses or capital of such Person and its Restricted Subsidiaries for such period, to the extent that such provision for taxes was deducted in computing such Consolidated Net Income; plus

     (2) the Fixed Charges of such Person and its Restricted Subsidiaries for such period, to the extent that such Fixed Charges were deducted in computing such Consolidated Net Income; plus

     (3) depreciation, amortization (including, without limitation, amortization of intangibles and deferred financing fees), and other non-cash expenses (including without limitation write-downs and impairment of property, plant, equipment and intangibles and

other long-lived assets and the impact of purchase accounting on such Person and its Restricted Subsidiaries for such period), but excluding any non-cash items for which a future cash payment will be required and for which an accrual or reserve is required by GAAP to be made, to the extent that such depreciation, amortization and other non-cash expenses were deducted in computing such Consolidated Net Income; plus

     (4) the amount of any restructuring charges (which, for the avoidance of doubt, shall include retention, severance, systems establishment cost or excess pension, other post employment benefits, curtailment or other excess charges); plus

     (5) the minority interest expense consisting of subsidiary income attributable to minority equity interests of third parties in any non-wholly owned Subsidiary in such period or any prior period, except to the extent of dividends declared or paid on Equity Interests held by third parties; plus

     (6) the amount of management, consulting, monitoring and advisory fees and related expenses paid to the Permitted Holders or to previous equity holders (or any accruals related to such fees and related expenses) during such period; provided that such amount shall not exceed in any four quarter period the greater of (x) $2.5 million and (y) 2% of Consolidated Cash Flow of the Company and its Restricted Subsidiaries for each period; plus

     (7) equity in earnings or losses in affiliates; plus

     (8) other non-operating expenses; plus

     (9) accretion of asset retirement obligations in accordance with SFAS No. 143, Accounting for Asset Retirement Obligations, and any similar accounting in prior periods; minus

          (B) non-cash items increasing such Consolidated Net Income for such period, other than (i) any items which represent the reversal in such period of any accrual of, or cash reserve for, anticipated charges in any prior period where such accrual or reserve is no longer required; or (ii) items related to percentage of completion accounting,

          in each case, on a consolidated basis and determined in accordance with GAAP.

          “ Consolidated Net Income ” means, with respect to any specified Person for any period, the aggregate of the Net Income of such Person and its Restricted Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that:

     (1) any net after-tax extraordinary, unusual or nonrecurring gains or losses (less all fees and expenses relating thereto) or income or expense or charge (including, without limitation, pension expense, casualty losses, severance expenses, relocation expenses, other restructuring expenses and fees, expenses or charges related to any offering of Equity Interests of such Person, any Investment, acquisition or Indebtedness permitted to be incurred hereunder (in each case, whether or not successful)), including

all fees, expenses, charges and change in control payments related to the Transactions, in each case shall be excluded;

     (2) any net after-tax income or loss from discontinued operations and any net after-tax gain or loss on disposal of discontinued operations shall be excluded;

     (3) any net after-tax gains or losses (minus all fees and expenses or charges relating thereto) attributable to business dispositions or asset dispositions other than in the ordinary course of business (as determined in good faith by the Board of Directors of the Company) shall be excluded;

     (4) any net after-tax income or loss (minus all fees and expenses or charges relating thereto) attributable to the early extinguishment of indebtedness and Hedging Obligations shall be excluded;

     (5) (A) the Net Income for such period of any Person that is not a Restricted Subsidiary, or that is accounted for by the equity method of accounting, shall be included only to the extent of the amount of dividends or distributions or other payments in respect of equity that are actually paid in cash (or to the extent converted into cash) by the referent Person to the Company or a Restricted Subsidiary thereof in respect of such period and (B) the Net Income for such period shall include any dividend, distribution or other payments in respect of equity paid in cash by such Person to the Company or a Restricted Subsidiary thereof in excess of the amount included in clause (A);

     (6) any non-cash charges from the application of the purchase method of accounting in connection with the Transactions or any future acquisition, to the extent that any such charges are deducted in computing such Consolidated Net Income, shall be excluded;

     (7) accruals and reserves that are established within twelve months after the consummation of the Stock Purchase (as defined in Merger Agreement) and that are so required to be established in accordance with GAAP shall be excluded;

     (8) any non-cash charges relating to write-downs and impairments of property, plant, equipment and intangibles and other long-lived assets shall be excluded;

     (9) any long-term incentive plan accruals and any non-cash compensation expense realized from grants of stock appreciation or similar rights, stock options or other rights to officers, directors and employees of such Person or any of its Restricted Subsidiaries shall be excluded;

     (10) solely for the purpose of determining the amount available for Restricted Payments under Section 4.07(a)(C)(i) hereof, the Net Income of any Restricted Subsidiary that is not a Guarantor will be excluded to the extent that the declaration or payment of dividends or similar distributions by that Restricted Subsidiary of that Net Income is not at the date of determination permitted without any prior governmental approval (that has not been obtained) or, directly or indirectly, by operation of the terms of its charter or any agreement, instrument, judgment, decree, order, statute, rule or

governmental regulation applicable to that Restricted Subsidiary or its stockholders or members, unless such restriction with respect to the payment of dividends or similar distributions has been legally waived; provided that Consolidated Net Income of such Person shall be increased by the amount of dividends or distributions or other payments that are actually paid in cash (or to the extent converted into cash) by such Person to the Company or another Restricted Subsidiary thereof in respect of such period, to the extent not already included therein; and

     (11) the cumulative effect of a change in accounting principles will be excluded.

          “ Contingent Obligations ” means, with respect to any Person, any obligation of such Person guaranteeing any leases, dividends or other obligations that do not constitute Indebtedness (“ primary obligations ”) of any other Person in any manner, whether directly or indirectly, including, without limitation, any obligation of such Person, whether or not contingent:

     (1) to purchase any such primary obligation or any property constituting direct or indirect security thereof;

     (2) to advance or supply funds (A) for the purchase or payment of any such primary obligation or (B) to maintain working capital or equity capital of the primary obligor or otherwise to maintain the net worth or solvency of the primary obligor; or

     (3) to purchase property, securities or services primarily for the purpose of assuring the owner of any such primary obligation of the ability of the primary obligor to make payment of such obligation against loss in respect thereof.

          “ Continuing Directors ” means, as of any date of determination, any member of the Board of Directors of the Company or any Parent, as the case may be, who:

     (1) was a member of such Board of Directors on the date of this Indenture, or

     (2) was nominated for election or elected to such Board of Directors by one or more of the Equity Investors or with the approval of a majority of the Continuing Directors who were members of such Board of Directors at the time of such nomination or election.

     “ Contribution Indebtedness ” means Indebtedness of the Company or any Guarantor in an aggregate principal amount not greater than twice the aggregate amount of cash contributions (other than Excluded Contributions) made to the equity capital of the Company or such Guarantor after the date of this Indenture, provided that:

     (1) if the aggregate principal amount of such Contribution Indebtedness is greater than one times such cash contributions to the equity capital of the Company or such Guarantor, as applicable, the amount in excess shall be Indebtedness (other than secured Indebtedness) with a Stated Maturity later than the Stated Maturity of the Notes, and

     (2) such Contribution Indebtedness (x) is incurred within 180 days after the making of such cash contributions and (y) is designated as Contribution Indebtedness pursuant to an Officers’ Certificate on the incurrence date thereof.

          “ Corporate Trust Office of the Trustee ” will be at the address of the Trustee specified in Section 13.02 hereof or such other address as to which the Trustee may give notice to the Company.

          “ Credit Agreement ” means that certain credit agreement, dated the Issue Date, by and among FR X Chart Holdings LLC, CI Acquisition Inc., as borrower, the guarantors named therein, Citicorp North America, Inc., as administrative agent, Morgan Stanley Senior Funding, Inc., as syndication agent, Citigroup Global Markets Inc. and Morgan Stanley Senior Funding, Inc., as joint lead arrangers and book runners and each lender party thereto, including any related notes, guarantees, collateral documents, instruments and agreements executed in connection therewith, and, in each case, as amended, restated, modified, renewed, refunded, replaced (whether upon or after termination or otherwise) or refinanced (including by means of sales of debt securities to institutional investors) in whole or in part from time to time in one or more agreements or indentures (in each case with the same or new lenders or institutional investors), including any agreement or indenture extending the maturity thereof or otherwise restructuring all or any portion of the Indebtedness thereunder or increasing the amount loaned or issued thereunder or altering the maturity thereof.

          “ Credit Facilities ” means one or more debt facilities (including, without limitation, the Credit Agreement) or commercial paper facilities, in each case with banks or other institutional lenders providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to such lenders or to special purpose entities formed to borrow from such lenders against such receivables) or letters of credit, in each case, as amended, restated, modified, renewed, refunded, replaced (whether upon or after termination or otherwise) or refinanced (including by means of sales of debt securities to institutional investors) in whole or in part from time to time in one or more agreements or indentures (in each case with the same or new lenders or institutional investors), including any agreement or indenture extending the maturity thereof or otherwise restructuring all or any portion of the indebtedness thereunder or increasing the amount loaned or issued thereunder or altering the maturity thereof.

          “ Custodian ” means the Trustee, as custodian with respect to the Notes in global form, or any successor entity thereto.

          “ Default ” means any event that is, or with the passage of time or the giving of notice or both would be, an Event of Default.

          “ Definitive Note ” means a certificated Note registered in the name of the Holder thereof and issued in accordance with Section 2.06 hereof, substantially in the form of Exhibit A hereto except that such Note shall not bear the Global Note Legend and shall not have the “Schedule of Exchanges of Interests in the Global Note” attached thereto.

          “ Depositary ” means, with respect to the Notes issuable or issued in whole or in part in global form, the Person specified in Section 2.03 hereof as the Depositary with respect to

the Notes, and any and all successors thereto appointed as depositary hereunder and having become such pursuant to the applicable provision of this Indenture.

          “ Designated Non-cash Consideration ” means the Fair Market Value of non-cash consideration received by the Company or one of its Restricted Subsidiaries in connection with an Asset Sale that is so designated as “Designated Non-cash Consideration” pursuant to an Officers’ Certificate, setting forth the basis of such valuation, less the amount of cash or Cash Equivalents received in connection with a subsequent sale of such Designated Non-cash Consideration.

          “ Designated Preferred Stock ” means preferred stock of the Company or any Parent (other than Disqualified Stock) that is issued for cash (other than to the Company or any of its Subsidiaries or an employee stock ownership plan or trust established by the Company or any of its Subsidiaries) and is so designated as Designated Preferred Stock, pursuant to an Officers’ Certificate, on the issuance date thereof, the cash proceeds of which are excluded from the calculation set forth in Section 4.07(a)(C)(ii) hereof.

          “ Designated Senior Indebtedness ” means (1) any Indebtedness under the Credit Agreement and (2) any other Indebtedness constituting Senior Indebtedness that, at the date of determination, has an aggregate principal amount outstanding of at least $25.0 million and that is specifically designated by the Company in the instrument creating or evidencing such Senior Indebtedness as “Designated Senior Indebtedness” or, in the alternative, as to which the Trustee is given written notice that such Indebtedness is “Designated Senior Indebtedness.”

          “ Disqualified Stock ” means any Capital Stock that, by its terms (or by the terms of any security into which it is convertible, or for which it is exchangeable, in each case, at the option of the holder of the Capital Stock), or upon the happening of any event, matures or is mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable at the option of the holder of the Capital Stock, in whole or in part, on or prior to the date that is 91 days after the date on which the Notes mature. Notwithstanding the preceding sentence, any Capital Stock will not constitute Disqualified Stock solely because the holders of the Capital Stock have the right to require the Company to repurchase such Capital Stock upon the occurrence of a change of control or an asset sale. The amount of Disqualified Stock deemed to be outstanding at any time for purposes of this Indenture will be the maximum amount that the Company and its Restricted Subsidiaries may become obligated to pay upon the maturity of, or pursuant to any mandatory redemption provisions of, such Disqualified Stock, exclusive of accrued dividends. The term “Disqualified Stock” shall also include any options, warrants or other rights that are convertible into Disqualified Stock or that are redeemable at the option of the holder or required to be redeemed, prior to the date that is 91 days after the date on which the Notes mature.

          “ Domestic Subsidiary ” means any Restricted Subsidiary of the Company that was formed under the laws of the United States or any state of the United States or the District of Columbia.

          “ Equity Interests ” means Capital Stock and all warrants, options or other rights to acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable for, Capital Stock).

          “ Equity Investors ” means First Reserve Corporation and its Affiliates.

          “ Equity Offering ” means (i) an offer and sale of Capital Stock (other than Disqualified Stock) of the Company or any Parent (to the extent the net proceeds therefrom are contributed to the equity capital of the Company) pursuant to (x) a registration statement that has been declared effective by the SEC pursuant to the Securities Act (other than a registration statement on Form S-8 or otherwise relating to equity securities issuable under any employee benefit plan of the Company or any Parent), or (y) a private issuance exempt from registration under the Securities Act.

          “ Euroclear ” means Euroclear Bank, S.A./N.V., as operator of the Euroclear system, and any successor thereto.

          “ Exchange Act ” means the Securities Exchange Act of 1934, as amended.

          “ Exchange Notes ” means the Notes issued in the Registered Exchange Offer pursuant to Section 2.06(f) hereof.

          “ Exchange Offer Registration Statement ” has the meaning set forth in the Registration Rights Agreement.

          “ Excluded Contributions ” means the net cash proceeds received by the Company after the date of this Indenture from:

          (1) contributions to its common equity capital, and

          (2) the sale (other than to a Subsidiary of the Company) of Capital Stock (other than Disqualified Stock and Designated Preferred Stock) of the Company,

in each case designated as “Excluded Contributions” pursuant to an Officers’ Certificate of the Company, the net cash proceeds of which are excluded from the calculation set forth in Section 4.07(a)(C)(ii) hereof.

          “ Fair Market Value ” means the value that would be paid by a willing buyer to an unaffiliated willing seller in a transaction not involving distress or necessity of either party, determined in good faith by the Board of Directors of the Company (unless otherwise provided in this Indenture) for transactions valued at, or in excess of, $10.0 million; provided that, if the Company or any Restricted Subsidiary is required by any antitrust authority to sell any asset, the consideration received upon such Asset Sale shall be deemed to be the “Fair Market Value” of such asset.

          “ Fixed Charge Coverage Ratio ” means with respect to any specified Person for any period, the ratio of the Consolidated Cash Flow of such Person for such period to the Fixed Charges of such Person for such period. In the event that the specified Person or any of its

Restricted Subsidiaries incurs, assumes, guarantees, repays, repurchases, redeems, defeases or otherwise discharges any Indebtedness (other than (i) ordinary working capital borrowings and (ii) in the case of revolving credit borrowings or revolving advances under any Qualified Receivables Financing, in which case interest expense will be computed based upon the average daily balance of such Indebtedness during the applicable period) or issues, repurchases or redeems preferred equity subsequent to the commencement of the period for which the Fixed Charge Coverage Ratio is being calculated and on or prior to the date on which the event for which the calculation of the Fixed Charge Coverage Ratio is made (the “ Calculation Date ”), then the Fixed Charge Coverage Ratio will be calculated giving pro forma effect to such incurrence, assumption, guarantee, repayment, repurchase, redemption, defeasance or other discharge of Indebtedness, or such issuance, repurchase or redemption of preferred equity, and the use of the proceeds therefrom, as if the same had occurred at the beginning of the applicable four-quarter reference period.

          In addition, for purposes of calculating the Fixed Charge Coverage Ratio, Asset Acquisitions, dispositions, mergers, consolidations and discontinued operations (as determined in accordance with GAAP), and any related financing transactions, that the specified Person or any of its Restricted Subsidiaries has both determined to make and made after the date of this Indenture and during the four-quarter reference period or subsequent to such reference period and on or prior to or simultaneously with the Calculation Date shall be calculated on a pro forma basis assuming that all such Asset Acquisitions, dispositions, mergers, consolidations and discontinued operations (and the change of any associated Fixed Charges and the change in Consolidated Cash Flow resulting therefrom) had occurred on the first day of the four-quarter reference period, including any pro forma expense and cost reductions and other operating improvements that have occurred or are reasonably expected to occur, in the reasonable judgment of the chief financial officer of the Company (regardless of whether these cost savings or operating improvements could then be reflected in pro forma financial statements in accordance with Regulation S-X promulgated under the Securities Act or any other regulation or policy of the SEC related thereto). Any Person that is a Restricted Subsidiary on the Calculation Date will be deemed to have been a Restricted Subsidiary at all times during such four-quarter period, and if, since the beginning of the four-quarter reference period, any Person that subsequently became a Restricted Subsidiary or was merged with or into the Company or any of its other Restricted Subsidiaries since the beginning of such period shall have made any acquisition, Investment, disposition, merger, consolidation or discontinued operation, in each case with respect to an operating unit of a business, that would have required adjustment pursuant to this definition, then the Fixed Charge Coverage Ratio shall be adjusted giving pro forma effect thereto for such period as if such Asset Acquisition, disposition, discontinued operation, merger or consolidation had occurred at the beginning of the applicable four-quarter reference period. Any Person that is not a Restricted Subsidiary on the Calculation Date will be deemed not to have been a Restricted Subsidiary at any time during such four-quarter period.

          For purposes of this definition, whenever pro forma effect is to be given to any transaction, the pro forma calculations shall be made in good faith by a responsible financial or accounting officer of the Company. If any Indebtedness bears a floating rate of interest and is being given pro forma effect, the interest on such Indebtedness shall be calculated as if the rate in effect on the Calculation Date had been the applicable rate for the entire period (taking into account any Hedging Obligations applicable to such Indebtedness if such Hedging Obligation

has a remaining term in excess of 12 months). Interest on a Capital Lease Obligation shall be deemed to accrue at an interest rate reasonably determined by a responsible financial or accounting officer of the Company to be the rate of interest implicit in such Capital Lease Obligation in accordance with GAAP. For purposes of making the computation referred to above, interest on any Indebtedness under a revolving credit facility computed on a pro forma basis shall be computed based upon the average daily balance of such Indebtedness during the applicable period. Interest on Indebtedness that may optionally be determined at an interest rate based upon a factor of a prime or similar rate, a eurocurrency interbank offered rate, or other rate, shall be deemed to have been based upon the rate actually chosen, or, if none, then based upon such optional rate chosen as the Company may designate. Any such pro forma calculation may include adjustments appropriate, in the reasonable determination of the Company as set forth in an Officers’ Certificate, to reflect operating expense reductions reasonably expected to result from any acquisition or merger.

          “ Fixed Charges ” means, with respect to any specified Person for any period, the sum, without duplication, of:

     (1) the consolidated interest expense of such Person and its Restricted Subsidiaries for such period, whether paid or accrued, excluding amortization of debt issuance costs and the expensing of any bridge or other financing fees, but including original issue discount, non-cash interest payments, the interest component of any deferred payment obligations (classified as Indebtedness under this Indenture), the interest component of all payments associated with Capital Lease Obligations and net of the effect of all payments made or received pursuant to Hedging Obligations in respect of interest rates; plus

     (2) the consolidated interest expense of such Person and its Restricted Subsidiaries that was capitalized during such period; plus

     (3) all cash dividend payments or other cash distributions on any series of preferred equity of such Person and all other dividend payments or other distributions on the Disqualified Stock of such Person; less

     (4) interest income;

     in each case, on a consolidated basis and in accordance with GAAP.

          “ Foreign Subsidiary ” means any Restricted Subsidiary of the Company other than a Domestic Subsidiary.

          “ GAAP ” means generally accepted accounting principles set forth in the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as have been approved by a significant segment of the accounting profession, which are in effect on the date of this Indenture.

          “ Global Note Legend ” means the legend set forth in Section 2.06(g)(2) hereof, which is required to be placed on all Global Notes issued under this Indenture.

          “ Global Notes ” means, individually and collectively, each of the Restricted Global Notes and the Unrestricted Global Notes deposited with or on behalf of and registered in the name of the Depository or its nominee, substantially in the form of Exhibit A hereto and that bears the Global Note Legend and that has the “Schedule of Exchanges of Interests in the Global Note” attached thereto, issued in accordance with Section 2.01, 2.06(b)(3), 2.06(b)(4), 2.06(d)(2), 2.06(d)(3) or 2.06(f) hereof.

          “ Government Securities ” means securities that are direct obligations of the United States of America for the timely payment of which its full faith and credit is pledged.

          “ guarantee ” means a guarantee other than by endorsement of negotiable instruments for collection in the ordinary course of business, direct or indirect, in any manner including, without limitation, by way of a pledge of assets or through letters of credit or reimbursement agreements in respect thereof, of all or any part of any Indebtedness (whether arising by virtue of partnership arrangements, or by agreements to keep-well, to purchase assets, goods, securities or services, to take or pay or to maintain financial statement conditions or otherwise).

     “ Guarantors ” means each of:

     (1) the subsidiaries of the Company that execute this Indenture on the Issue Date; and

     (2) any other Subsidiary of the Company that becomes a Guarantor in accordance with the provisions of this Indenture,

and their respective successors and assigns, in each case, until the Note Guarantee of such Person has been released in accordance with the provisions of this Indenture.

          “ Hedging Obligations ” means, with respect to any specified Person, the obligations of such Person under:

     (1) interest rate swap agreements (whether from fixed to floating or from floating to fixed), interest rate cap agreements and interest rate collar agreements;

     (2) other agreements or arrangements designed to manage interest rates or interest rate risk; and

     (3) other agreements or arrangements designed to protect such Person against fluctuations in currency exchange rates or commodity prices.

     “ Holder ” means a Person in whose name a Note is registered.

          “ IAI Global Note ” means a Global Note substantially in the form of Exhibit A hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee that will be issued in a denomination equal to the outstanding principal amount of the Notes sold to Institutional Accredited Investors.

          “ Immaterial Subsidiary ” means any Subsidiary that is not a Material Subsidiary.

          “ Indebtedness ” means, with respect to any specified Person, any indebtedness of such Person, whether or not contingent:

     (1) in respect of borrowed money;

     (2) evidenced by bonds, notes, debentures or similar instruments or letters of credit (or reimbursement agreements in respect thereof);

     (3) in respect of banker’s acceptances;

     (4) representing Capital Lease Obligations;

     (5) representing the balance deferred and unpaid of the purchase price of any property or services due more than six months after such property is acquired or such services are completed;

     (6) representing any Hedging Obligations; or

     (7) to the extent not otherwise included, with respect to the Company and its Restricted Subsidiaries, the amount then outstanding (i.e., advanced, and received by, and available for use by, the Company or any of its Restricted Subsidiaries) under any Receivables Financing (as set forth in the books and records of the Company or any Restricted Subsidiary and confirmed by the agent, trustee or other representative of the institution or group providing such Receivables Financing),

if and to the extent any of the preceding items (other than letters of credit and Hedging Obligations) would appear as a liability upon a balance sheet of the specified Person prepared in accordance with GAAP. In addition, the term “Indebtedness” includes (i) all Indebtedness of others secured by a Lien on any asset of the specified Person (whether or not such Indebtedness is assumed by the specified Person); provided , however , that the amount of such Indebtedness shall be the lesser of (x) the Fair Market Value of such asset as of such date of determination and (y) the amount of such Indebtedness of such other Person; and (ii) to the extent not otherwise included, the guarantee by the specified Person of any Indebtedness of any other Person. Notwithstanding the foregoing, “Indebtedness” shall not include (a) accrued expenses, royalties and Trade Payables; (b) Contingent Obligations incurred in the ordinary course of business; and (c) asset retirement obligations and obligations in respect of reclamation and workers’ compensation (including pensions and retiree medical care) that are not overdue by more than 90 days.

          “ Indenture ” means this Indenture, as amended or supplemented from time to time.

          “ Indirect Participant ” means a Person who holds a beneficial interest in a Global Note through a Participant.

          “ Initial Notes ” has the meaning assigned to it in the preamble to this Indenture.

          “ Institutional Accredited Investor ” means an institution that is an “accredited investor” as defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act, who are not also QIBs.

          “ Investment Grade Rating ” means a rating equal to or higher than Baa3 (or the equivalent) by Moody’s or BBB- (or the equivalent) by S&P or, if either such entity ceases to rate the Notes for reasons outside of the control of the Company, the equivalent investment grade credit rating from any other Rating Agency.

          “ Investment Grade Securities ” means:

     (1) securities issued or directly and fully guaranteed or insured by the U.S. government or any agency or instrumentality thereof (other than Cash Equivalents) and in each case with maturities not exceeding two years from the date of acquisition;

     (2) investments in any fund that invests exclusively in investments of the type described in clause (1) which fund may also hold immaterial amounts of cash pending investment and/or distribution; and

     (3) corresponding instruments in countries other than the United States customarily utilized for high quality investments and in each case with maturities not exceeding two years from the date of acquisition.

          “ Investments ” means, with respect to any Person, all direct or indirect investments by such Person in other Persons (including Affiliates) in the forms of loans (including guarantees or other obligations), advances or capital contributions (excluding accounts receivable, trade credit and advances to customers and commission, travel and similar advances to officers, employees and consultants made in the ordinary course of business), purchases or other acquisitions for consideration of Indebtedness, Equity Interests or other securities, together with all items that are or would be classified as investments on a balance sheet prepared in accordance with GAAP. If the Company or any Subsidiary of the Company sells or otherwise disposes of any Equity Interests of any direct or indirect Subsidiary of the Company such that, after giving effect to any such sale or disposition, such Person is no longer a Subsidiary of the Company, the Company will be deemed to have made an Investment on the date of any such sale or disposition equal to the Fair Market Value of the Company’s Investments in such Subsidiary that were not sold or disposed of in an amount determined as provided in Section 4.07(c) hereof.

          “ Issue Date ” means October 17, 2005.

          “ Legended Regulation S Global Note ” means a Global Note in the form of Exhibit A bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee, issued in a denomination equal to the outstanding principal amount at maturity of the Notes initially sold in reliance on Rule 903 of Regulation S.

          “ Letter of Transmittal ” means the letter of transmittal to be prepared by the Company and sent to all Holders of the Notes for use by such Holders in connection with the Registered Exchange Offer.

          “ Lien ” means, with respect to any asset (except in connection with a Qualified Receivables Financing), any mortgage, lien, pledge, charge, security interest or encumbrance of any kind in respect of such asset, whether or not filed, recorded or otherwise perfected under applicable law, including any conditional sale or other title retention agreement, any lease in the nature thereof, any option or other agreement to sell or give a security interest in and any filing of or agreement to give any financing statement under the Uniform Commercial Code (or equivalent statutes) of any jurisdiction.

          “ Management Notes ” means any notes evidencing Indebtedness which, by their terms, are expressly subordinated to the Notes, that are issued by the Company, any Subsidiary or any Parent to existing or former employees, officers, consultants, or directors of the Company or any Subsidiary or any Parent in consideration for such person’s Equity Interests of the Company, any Subsidiary or any Parent.

          “ Marketable Securities ” means, with respect to any Asset Sale, any readily marketable equity securities that are (i) traded on the New York Stock Exchange, the American Stock Exchange or the Nasdaq National Market; and (ii) issued by a corporation having a total equity market capitalization of not less than $250.0 million; provided that the excess of (A) the aggregate amount of securities of any one such corporation held by the Company and any Restricted Subsidiary over (B) ten times the average daily trading volume of such securities during the 20 immediately preceding trading days shall be deemed not to be Marketable Securities, as determined on the date of the contract relating to such Asset Sale.

          “ Material Subsidiary ” means any Subsidiary that would be a “significant subsidiary” as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities Act, as such Regulation is in effect on the date of this Indenture, provided , however , that all references to “10 percent” in such definition shall be replaced with “5 percent.”

          “ Merger Agreement ” means the Agreement and Plan of Merger dated as of August 2, 2005 among Chart Industries, Inc., certain stockholders of Chart Industries, Inc., First Reserve Fund X L.P. and CI Acquisition, Inc.

          “ Moody’s ” means Moody’s Investors Service, Inc. and its successors and assigns.

          “ Net Income ” means, with respect to any Person for any period, the net income (loss) of such Person for such period, determined in accordance with GAAP and before any reduction in respect of dividends on preferred interests, excluding, however, (a) any gain or loss, together with any related provision for taxes on such gain or loss, realized in connection with (1) any Asset Sale (including, without limitation, dispositions pursuant to sale and leaseback transactions) or (2) the disposition of any securities by such Person or any of its Subsidiaries or the extinguishment of any Indebtedness of such Person or any of its Subsidiaries and (b) any extraordinary or nonrecurring gain or loss, together with any related provision for taxes on such extraordinary or nonrecurring gain or loss.

          “ Net Proceeds ” means the aggregate cash proceeds received by the Company or any of its Restricted Subsidiaries in respect of any Asset Sale (including, without limitation, any cash received upon the sale or other disposition of any Designated Non-cash Consideration

received in any Asset Sale and any cash payments received by way of deferred payment of principal pursuant to a note or installment receivable or otherwise, but only as and when received, but excluding the assumption by the acquiring Person of Indebtedness relating to the disposed assets or other consideration received in any non-cash form), net of the direct costs relating to such Asset Sale and the sale of such Designated Non-cash Consideration, including, without limitation, legal, accounting and investment banking fees, and sales commissions, and any relocation expenses incurred as a result of the Asset Sale or taxes paid or payable as a result of the Asset Sale, in each case, after taking into account any available tax credits or deductions and any tax sharing arrangements, and amounts required to be applied to the repayment of Indebtedness, other than Indebtedness under a Credit Facility, secured by a Lien on the asset or assets that were the subject of such Asset Sale and any reserve for adjustment in respect of the sale price of such asset or assets established in accordance with GAAP, including without limitation, pension and post-employment benefit liabilities and liabilities related to environmental matters or against any indemnification obligations associated with such transaction.

     “ Non-Recourse Debt ” means Indebtedness:

     (1) as to which neither the Company nor any of its Restricted Subsidiaries (a) provides credit support of any kind (including any undertaking, agreement or instrument that would constitute Indebtedness) other than a pledge of the Equity Interest of any Unrestricted Subsidiaries, (b) is directly or indirectly liable (as a guarantor or otherwise) other than by virtue of a pledge of the Equity Interests of any Unrestricted Subsidiaries, or (c) constitutes the lender; and

     (2) no default with respect to which (including any rights that the holders of the Indebtedness may have to take enforcement action against an Unrestricted Subsidiary) would permit, upon notice, lapse of time or both, any holder of any other Indebtedness (other than the Notes offered hereby) of the Company or any of its Restricted Subsidiaries to declare a default on such other Indebtedness or cause the payment of the Indebtedness to be accelerated or payable prior to its Stated Maturity.

     “ Non-U.S. Person ” means a Person who is not a U.S. Person.

          “ Note Guarantee ” means the guarantee by each Guarantor of the Company’s obligations under this Indenture and the Notes.

          “ Notes ” has the meaning assigned to it in the preamble to this Indenture. The Initial Notes, any Additional Notes and any Exchange Notes shall be treated as a single class for all purposes under this Indenture, and unless the context otherwise requires, all references to the Notes shall include the Initial Notes, any Additional Notes and any Exchange Notes.

          “ Obligations ” means any principal, interest, penalties, fees, indemnifications, reimbursements, damages, costs, expenses and other liabilities payable under the documentation governing any Indebtedness.

          “ Offering Memorandum ” means that certain offering memorandum, dated September 30, 2005, relating to the initial offering of the Notes.

          “ Officer ” means, with respect to any Person, the Chairman of the Board, the Chief Executive Officer, the President, the Chief Operating Officer, the Chief Financial Officer, the Treasurer, any Assistant Treasurer, the Controller, the Secretary, any Senior Vice President, any Vice President or any Assistant Vice President of such Person.

          “ Officers’ Certificate ” means a certificate signed on behalf of the Company by at least two Officers of the Company, one of whom must be the principal executive officer, the principal financial officer, the treasurer or the principal accounting officer of the Company, that meets the requirements of Section 13.05 hereof.

          “ Opinion of Counsel ” means an opinion from legal counsel that meets the requirements of Section 13.05 hereof. The counsel may be an employee of or counsel to the Company or any Subsidiary of the Company.

          “ Parent ” means any direct or indirect parent company of the Company.

          “ Participant ” means, with respect to the Depositary, Euroclear or Clearstream, a Person who has an account with the Depositary, Euroclear or Clearstream, respectively (and, with respect to DTC, shall include Euroclear and Clearstream).

          “ Permitted Business ” means the businesses of the Company and its Subsidiaries engaged in on the date of this Indenture and any other activities that are similar, ancillary or reasonably related to, or a reasonable extension, expansion or development of, such businesses or ancillary thereto.

          “ Permitted Holders ” means the Equity Investors and Related Parties. Any person or group whose acquisition of beneficial ownership constitutes a Change of Control in respect of which a Change of Control Offer is made in accordance with the requirements of this Indenture will thereafter, together with its Affiliates, constitute an additional Permitted Holder.

          “ Permitted Investments ” means:

     (1) any Investment in the Company or in a Restricted Subsidiary of the Company;

     (2) any Investment in cash, Cash Equivalents, Marketable Securities or Investment Grade Securities;

     (3) any Investment by the Company or any Restricted Subsidiary of the Company in a Person, if as a result of such Investment:

          (a) such Person becomes a Restricted Subsidiary of the Company; or

          (b) such Person, in one transaction or a series of related transactions, is merged, consolidated or amalgamated with or into, or transfers or conveys substantially all of its assets to, or is liquidated into, the Company or a Restricted Subsidiary of the Company,

          and, in each of cases (a) and (b), any Investment then held by such person; provided that any such Investment was not made by such Person in connection with, or in anticipation or contemplation of, such Person becoming a Restricted Subsidiary of the Company or such merger, consolidation, amalgamation, transfer, conveyance or liquidation;

     (4) any Investment made as a result of the receipt of non-cash consideration from an Asset Sale that was made pursuant to and in compliance with Section 4.10 hereof;

     (5) any Investment the payment for which consists of Equity Interests (other than Disqualified Stock) of the Company or any Parent (which Investment, in the case of any Parent, is contributed to the common equity capital of the Company; provided that any such contribution shall be excluded from Section 4.07(a)(C)(ii) hereof);

     (6) any Investments received (i) in compromise or resolution of (A) obligations of trade creditors or customers that were incurred in the ordinary course of business of the Company or any of its Restricted Subsidiaries, including pursuant to any plan of reorganization or similar arrangement upon the bankruptcy or insolvency of any trade creditor or customer; or (B) litigation, arbitration or other disputes; or (ii) as a result of a foreclosure by the Company or any of its Restricted Subsidiaries with respect to any secured Investment or other transfer of title with respect to any secured Investment in default;

     (7) Investments represented by Hedging Obligations;

     (8) loans or advances to officers, directors and employees made in the ordinary course of business of the Company or any Restricted Subsidiary of the Company in an aggregate principal amount not to exceed $2.5 million at any one time outstanding;

     (9) repurchases of the Notes;

     (10) Investments in Permitted Businesses, joint ventures or Unrestricted Subsidiaries having an aggregate Fair Market Value, taken together with all other Investments made pursuant to this clause (10) that are at that time outstanding, not to exceed the greater of (x) $35.0 million and (y) 5% of Total Assets at the time of such Investment (with the Fair Market Value of each Investment being measured at the time made and without giving effect to subsequent changes in value);

     (11) any Investment in a Receivables Subsidiary or any Investment by a Receivables Subsidiary in any other Person in connection with a Qualified Receivables Financing, including Investments of funds held in accounts permitted or required by the arrangements governing such Qualified Receivables Financing or any related Indebtedness; provided , however , that any Investment in a Receivables Subsidiary is in the form of a Purchase Money Note, contribution of additional receivables or an equity interest;

     (12) any transaction to the extent it constitutes an Investment that is permitted by and made in accordance with the provisions of Section 4.11(b) hereof (except for transactions described in clauses (6), (8), (10) and (12) of Section 4.11(b));

     (13) guarantees issued in accordance with Section 4.09 and Section 4.17 hereof;

     (14) any Investment existing on the date of this Indenture and any Investment that replaces, refinances or refunds an existing Investment; provided that the new Investment is in an amount that does not exceed the amount replaced, refinanced or refunded, and is made in the same Person as the Investment replaced, refinanced or refunded;

     (15) Investments consisting of purchases and acquisitions of inventory, supplies, materials and equipment or purchases of contract rights or licenses or leases of intellectual property, in each case in the ordinary course of business; and

     (16) additional Investments by the Company or any Restricted Subsidiary having an aggregate Fair Market Value (measured on the date each such Investment was made and without giving effect to subsequent changes in value), taken together with all other Investments made pursuant to this clause (16) that are at the time outstanding not to exceed 2.0% of Total Assets; provided , however , that if any Investment pursuant to this clause (16) is made in a Person that is not a Restricted Subsidiary of the Company at the date of the making of such Investment and such Person becomes a Restricted Subsidiary of the Company after such date, such Investment shall thereafter be deemed to have been made pursuant to clause (1) above and shall cease to have been made pursuant to this clause (16) for so long as such Person continues to be a Restricted Subsidiary;

provided , however , that with respect to any Investment, the Company may, in its sole discretion, allocate all or any portion of any Investment to one or more of the above clauses (1) through (16) so that the entire Investment would be a Permitted Investment.

          “ Permitted Junior Securities ” means:

     (1) Equity Interests in the Company; or

     (2) debt securities that are subordinated to all Senior Indebtedness and any debt securities issued in exchange for Senior Indebtedness to substantially the same extent as, or to a greater extent than, the Notes are subordinated to Senior Indebtedness under this Indenture.

     “ Permitted Liens ” means:

     (1) Liens securing Indebtedness and other Obligations under Credit Facilities incurred pursuant to Section 4.09 hereof and/or securing Hedging Obligations related thereto;

     (2) Liens in favor of the Company or any of its Restricted Subsidiaries;

     (3) Liens on property of a Person existing at the time such Person is merged with or into or consolidated with the Company or any Restricted Subsidiary of the Company; provided that such Liens were in existence prior to the contemplation of such merger or consolidation and do not extend to any assets other than those of the Person merged into or consolidated with the Company or the Restricted Subsidiary;

     (4) Liens on property (including Capital Stock) existing at the time of acquisition of the property by the Company or any Subsidiary of the Company; provided that such Liens were in existence prior to, such acquisition, and not incurred in contemplation of, such acquisition and do not extend to any property other than the property so acquired by the Company or such Restricted Subsidiary;

     (5) Liens or deposits to secure the performance of statutory or regulatory obligations, or surety, appeal, indemnity or performance bonds, warranty and contractual requirements or other obligations of a like nature incurred in the ordinary course of business;

     (6) Liens securing reimbursement obligations with respect to commercial letters of credit which encumber documents and other assets relating to such letters of credit and products and proceeds thereof;

     (7) Liens to secure Indebtedness (including Capital Lease Obligations) permitted to be incurred pursuant to Section 4.09(b)(4) hereof covering only the assets acquired with or financed by such Indebtedness;

     (8) Liens securing Indebtedness permitted to be incurred pursuant to Section 4.09(b)(15) and (17) hereof;

     (9) Liens existing on the date of this Indenture;

     (10) Liens for taxes, assessments or governmental charges or claims that are not yet delinquent or that are being contested in good faith by appropriate proceedings promptly instituted and diligently concluded; provided that any reserve or other appropriate provision as is required in conformity with GAAP has been made therefor;

     (11) Liens created for the benefit of (or to secure) the Notes (or the Note Guarantees);

     (12) Liens securing Indebtedness or other obligations incurred in the ordinary course of business of the Company or any Subsidiary of the Company with respect to obligations that do not exceed 5% of Total Assets at any one time outstanding;

     (13) Liens on accounts receivable and related assets of the type specified in the definition of “Receivables Financing” incurred in connection with a Qualified Receivables Financing;

     (14) licenses of intellectual property in the ordinary course of business;

     (15) Liens to secure a defeasance trust;

     (16) Liens on equipment of the Company or any Restricted Subsidiary granted in the ordinary course of business to clients upon whose property or premises such equipment is located;

     (17) Liens imposed by law (including, without limitation, Liens in favor of customers for equipment under order or in respect of advances paid in connection therewith), such as carriers’, warehousemen’s, landlord’s, lessor’s, suppliers, banks, repairmen’s and mechanics’ Liens, and Liens of landlords securing obligations to pay lease payments that are not yet due and payable or in default, in each case, incurred in the ordinary course of business;

     (18) Liens securing the aggregate amount of Indebtedness (including Acquired Debt) incurred in connection with (or at any time following the consummation of) an Asset Acquisition made in accordance with this Indenture equal to, at the time of incurrence, the net increase in inventory, accounts receivable and net property, reserves, plant and equipment attributable to such Asset Acquisition from the amounts reflected on the Company’s historical consolidated balance sheet as of the end of the full fiscal quarter ending on or prior to the date of such Asset Acquisition, calculated after giving effect on a pro forma basis to such Asset Acquisition (which amount may, but need not, be incurred in whole or in part under the Credit Agreement) less the amount of Indebtedness incurred in connection with such Asset Acquisition secured by Liens pursuant to clause (4) or (7) above;

     (19) Liens incurred or deposits made in the ordinary course of business to secure payment of workers’ compensation or to participate in any fund in connection with workmen’s compensation, unemployment insurance, old-age pensions or other social security programs;

     (20) easements, rights of way, zoning and similar restrictions, reservations (including severances, leases or reservations of oil, gas, coal, minerals or water rights), restrictions or encumbrances in respect of real property or title defects that were not incurred in connection with Indebtedness and that do not in the aggregate materially adversely affect the value of said properties (as such properties are used by the Company or its Subsidiaries) or materially impair their use in the operation of the business of the Company and its Subsidiaries;

     (21) Liens to secure any Permitted Refinancing Indebtedness permitted to be incurred under this Indenture; provided , however , that:

     (a) the new Lien shall be limited to all or part of the same property and assets that secured or, under the written agreements pursuant to which the original Lien arose, could secure the original Lien (plus improvements and accessions to such property or proceeds or distributions thereof); and

     (b) the Indebtedness secured by the new Lien is not increased to any amount greater than the sum of (x) the outstanding principal amount, or, if

greater, committed amount, of the Permitted Refinancing Indebtedness and (y) an amount necessary to pay any fees and expenses, including premiums, related to such renewal, refunding, refinancing, replacement, defeasance or discharge;

     (22) Liens arising from precautionary Uniform Commercial Code financing statement filings regarding operating leases entered into by the Company or any of its Restricted Subsidiaries in the ordinary course of business;

     (23) judgment Liens not giving rise to an Event of Default so long as any appropriate legal proceedings that may have been duly initiated for the review of such judgment shall not have been finally terminated or the period within which such legal proceedings may be initiated shall not have expired;

     (24) Liens on Capital Stock of an Unrestricted Subsidiary that secure Indebtedness or other obligations of such Unrestricted Subsidiary;

     (25) leases and subleases of real property which do not materially interfere with the ordinary conduct of the business of the Company and its Restricted Subsidiaries; and

     (26) Liens securing insurance premium financing arrangements, provided that such Lien is limited to the applicable insurance contracts.

     “ Permitted Payments to Parent ” means, without duplication as to amounts:

     (1) payments to any Parent in amounts equal to the amounts required for any direct payment of the Company to pay fees and expenses (including franchise or similar taxes) required to maintain its corporate existence, customary salary, bonus and other benefits payable to officers and employees of any direct parent of the Company and general corporate overhead expenses of any direct parent of the Company to the extent such fees and expenses are attributable to the ownership or operation of the Company and its Subsidiaries;

     (2) for so long as the Company is a member of a group filing a consolidated or combined tax return with any Parent, payments to any Parent in respect of an allocable portion of the tax liabilities of such group that is attributable to the Company and its Subsidiaries (“ Tax Payments ”). The Tax Payments shall not exceed the lesser of (i) the amount of the relevant tax (including any penalties and interest) that the Company would owe if the Company were filing a separate tax return (or a separate consolidated or combined return with its Subsidiaries that are members of the consolidated or combined group), taking into account any carryovers and carrybacks of tax attributes (such as net operating losses) of the Company and such Subsidiaries from other taxable years and (ii) the net amount of the relevant tax that such Parent actually owes to the appropriate taxing authority. Any Tax Payments received from the Company shall be paid over to the appropriate taxing authority within 30 days of any Parent’s receipt of such Tax Payments or refunded to the Company; and

     (3) dividends or distributions paid to any Parent, if applicable, in amounts equal to amounts required for any Parent, if applicable, to pay interest and/or principal on Indebtedness the proceeds of which have been contributed to the Company or any of its Restricted Subsidiaries and that has been guaranteed by, or is otherwise considered Indebtedness of, the Company incurred in accordance with Section 4.09 hereof.

             “ Permitted Refinancing Indebtedness ” means any Indebtedness of the Company or any of its Restricted Subsidiaries (other than Disqualified Stock) issued in exchange for, or the net proceeds of which are used to extend, renew, refund, refinance, replace, defease or discharge other Indebtedness of the Company or any of its Restricted Subsidiaries (other than intercompany Indebtedness); provided that:

     (1) the principal amount (or accreted value, if applicable) of such Permitted Refinancing Indebtedness does not exceed the principal amount (or accreted value, if applicable) of the Indebtedness extended, renewed, refunded, refinanced, replaced, defeased or discharged (plus any premium required to be paid on the Indebtedness being so renewed, refunded, replaced, defeased or discharged, plus the amount of all fees and expenses incurred in connection therewith);

     (2) such Permitted Refinancing Indebtedness has a final maturity date equal to or later than the final maturity date of, and has a Weighted Average Life to Maturity equal to or greater than the remaining Weighted Average Life to Maturity of, the Indebtedness being extended, renewed, refunded, refinanced, replaced, defeased or discharged; provided that this clause (2) shall not apply to Senior Indebtedness;

     (3) if the Indebtedness being extended, renewed, refunded, refinanced, replaced, defeased or discharged is subordinated in right of payment to the Notes or the Note Guarantees, such Permitted Refinancing Indebtedness has a final maturity date later than the final maturity date of, and is subordinated in right of payment to, the Notes on terms at least as favorable to the Holders of Notes as those contained in the documentation governing the Indebtedness being extended, renewed, refunded, refinanced, replaced, defeased or discharged;

     (4) if the Indebtedness being extended, refinanced, renewed, replaced, defeased or refunded is pari passu in right of payment with the Notes or any Note Guarantees, such Permitted Refinancing Indebtedness is pari passu in right of payment with, or subordinated in right of payment to, the Notes or such Note Guarantees; and

     (5) such Permitted Refinancing Indebtedness shall not include Indebtedness of the Company or a Restricted Subsidiary that refinances Indebtedness of an Unrestricted Subsidiary.

              “ Person ” means any individual, corporation, partnership, joint venture, association, joint-stock company, trust, unincorporated organization, limited liability company or government or other entity.

              “ Placement Agents ” means Morgan Stanley & Co. Incorporated, Citigroup Global Markets Inc., and Natexis Bleichroeder Inc.

          “ Private Placement Legend ” means the legend set forth in Section 2.06(g)(1) hereof to be placed on all Notes issued under this Indenture except where otherwise permitted by the provisions of this Indenture.

          “ Purchase Money Note ” means a promissory note of a Receivables Subsidiary evidencing a line of credit, which may be irrevocable, from the Company or any Subsidiary of the Company to a Receivables Subsidiary in connection with a Qualified Receivables Financing, which note is intended to finance that portion of the purchase price that is not paid by cash or a contribution of equity.

          “ QIB ” means a “qualified institutional buyer” as defined in Rule 144A.

          “ Qualified Receivables Financing ” means any Receivables Financing of a Receivables Subsidiary that meets the following conditions:

     (1) the Board of Directors of the Company will have determined in good faith that such Qualified Receivables Financing (including financing terms, covenants, termination events and other provisions) is in the aggregate economically fair and reasonable to the Company and the Receivables Subsidiary,

     (2) all sales of accounts receivable and related assets to the Receivables Subsidiary are made at Fair Market Value (as determined in good faith by the Company), and

     (3) the financing terms, covenants, termination events and other provisions thereof will be market terms (as determined in good faith by the Company) and may include Standard Securitization Undertakings.

          The grant of a security interest in any accounts receivable of the Company or any of its Restricted Subsidiaries (other than a Receivables Subsidiary) to secure a Credit Facility will not be deemed a Qualified Receivables Financing. For purposes of this Indenture, a receivables facility whether now in existence or arising in the future (and any replacement thereof with substantially similar terms in the aggregate) will be deemed to be a Qualified Receivables Financing that is not recourse to the Company (except for Standard Securitization Undertakings).

          “ Rating Agency ” means each of S&P and Moody’s, or if S&P or Moody’s or both shall not make a rating on the Notes publicly available, a nationally recognized statistical rating organization or organizations, within the meaning of Rule 15c3-1(c)(2)(vi)(F) under the Exchange Act, selected by the Company as a replacement agency or agencies for S&P or Moody’s, or both, as the case may be.

          “ Receivables Financing ” means any transaction or series of transactions that may be entered into by the Company or any of its Subsidiaries pursuant to which the Company or any of its Subsidiaries may sell, convey or otherwise transfer to (a) a Receivables Subsidiary (in the case of a transfer by the Company or any of its Subsidiaries), and (b) any other Person (in the case of a transfer by a Receivables Subsidiary), or may grant a security interest in, any accounts receivable (whether now existing or arising in the future) of the Company or any of its

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Subsidiaries, and any assets related thereto including, without limitation, all collateral securing such accounts receivable, all contracts and all guarantees or other obligations in respect of such accounts receivable, proceeds of such accounts receivable and other assets which are customarily transferred or in respect of which security interests are customarily granted in connection with asset securitization transactions involving accounts receivable and any Hedging Obligations entered into by the Company or any such Subsidiary in connection with such accounts receivable.

          “ Receivables Repurchase Obligation ” means any obligation of a seller of receivables in a Qualified Receivables Financing to repurchase receivables arising as a result of a breach of a representation, warranty or covenant or otherwise, including as a result of a receivable or portion thereof becoming subject to any asserted defense, dispute, off-set or counterclaim of any kind as a result of any action taken by, any failure to take action by or any other event relating to the seller.

          “ Receivables Subsidiary ” means a Wholly Owned Restricted Subsidiary of the Company (or another Person formed for the purposes of engaging in a Qualified Receivables Financing with the Company in which the Company or any Subsidiary of the Company makes an Investment and to which the Company or any Subsidiary of the Company transfers accounts receivable and related assets) which engages in no activities other than in connection with the financing of accounts receivable of the Company and its Subsidiaries, all proceeds thereof and all rights (contractual or other), collateral and other assets relating thereto, and any business or activities incidental or related to such business, and which is designated by the Board of Directors of the Company (as provided below) as a Receivables Subsidiary and:

     (1) no portion of the Indebtedness or any other obligations (contingent or otherwise) of which (i) is guaranteed by the Company or any other Subsidiary of the Company (excluding guarantees of Obligations (other than the principal of, and interest on, Indebtedness) pursuant to Standard Securitization Undertakings), (ii) is recourse to or obligates the Company or any other Subsidiary of the Company in any way other than pursuant to Standard Securitization Undertakings, or (iii) subjects any property or asset of the Company or any other Subsidiary of the Company, directly or indirectly, contingently or otherwise, to the satisfaction thereof, other than pursuant to Standard Securitization Undertakings,

     (2) with which neither the Company nor any other Subsidiary of the Company has any material contract, agreement, arrangement or understanding other than on terms which the Company reasonably believes to be no less favorable to the Company or such Subsidiary than those that might be obtained at the time from Persons that are not Affiliates of the Company, and

     (3) to which neither the Company nor any other Subsidiary of the Company has any obligation to maintain or preserve such entity’s financial condition or cause such entity to achieve certain levels of operating results.

          Any such designation by the Board of Directors of the Company shall be evidenced to the Trustee by filing with the Trustee a certified copy of the resolution of the Board

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of Directors of the Company giving effect to such designation and an Officers’ Certificate certifying that such designation complied with the foregoing conditions

          “ Registered Exchange Offer ” has the meaning set forth in the Registration Rights Agreement.

          “ Registration Rights Agreement ” means the registration rights agreement to be dated the date of this Indenture, among the Company, the Guarantors and the Placement Agents.

          “ Related Party ” means:

     (1) any controlling stockholder, partner, member, 50% (or more) owned Subsidiary, or immediate family member (in the case of an individual) of any Equity Investor;

     (2) any trust, corporation, partnership or other entity, the beneficiaries, stockholders, partners, owners or Persons beneficially holding a 50% or more controlling interest of which consist of any one or more Equity Investors and/or such other Persons referred to in the immediately preceding clause; or

     (3) any Person with whom an Equity Investor or a Related Party (under clauses (1) or (2) of the definition of Related Party) may be deemed as part of a “group” within the meaning of Section 13(d)(3) of the Exchange Act.

          “ Regulation S ” means Regulation S promulgated under the Securities Act.

          “ Regulation S Global Note ” means a Legended Regulation S Global Note or an Unlegended Regulation S Global Note, as appropriate.

          “ Responsible Officer ,” when used with respect to the Trustee, means any officer within the Corporate Trust Administration of the Trustee (or any successor group of the Trustee) or any other officer of the Trustee customarily performing functions similar to those performed by any of the above designated officers and also means, with respect to a particular corporate trust matter, any other officer to whom such matter is referred because of his knowledge of and familiarity with the particular subject, in each case having direct responsibility for the administration of this Indenture.

          “ Restricted Definitive Note ” means a Definitive Note bearing the Private Placement Legend.

          “ Restricted Global Note ” means a Global Note bearing the Private Placement Legend.

          “ Restricted Investment ” means an Investment other than a Permitted Investment.

          “ Restricted Period ” means the 40-day distribution compliance period as defined in Regulation S.

          “ Restricted Subsidiary ” of a Person means any Subsidiary of the referent Person that is not an Unrestricted Subsidiary.

          “ Rule 144 ” means Rule 144 promulgated under the Securities Act.

          “ Rule 144A ” means Rule 144A promulgated under the Securities Act.

          “ Rule 903 ” means Rule 903 promulgated under the Securities Act.

          “ Rule 904 ” means Rule 904 promulgated under the Securities Act.

          “ S&P ” means Standard & Poor’s Ratings Services and its successors and assigns.

          “ SEC ” means the Securities and Exchange Commission.

          “ Securities Act ” means the Securities Act of 1933, as amended.

          “ Senior Indebtedness ” means the following obligations of the Company or any Guarantor, whether outstanding on the Issue Date or thereafter incurred: (1) all Indebtedness and all other monetary obligations (including, without limitation, expenses, fees, principal, interest, reimbursement obligations under letters of credit and indemnities payable in connection therewith) under (or in respect of) the Credit Agreement or Hedging Obligation relating to the Indebtedness under the Credit Agreement and (2) all other Indebtedness and all other monetary obligations of the Company or any Guarantor (other than the Notes and any Note Guarantee), including principal and interest on such Indebtedness, unless such Indebtedness, by its terms or by the terms of any agreement or instrument pursuant to which such Indebtedness is issued, is pari passu with, or subordinated in right of payment to, the Notes or any Note Guarantee; provided that the term “Senior Indebtedness” shall not include (a) any Indebtedness of the Company or any Guarantor that, when incurred, was without recourse to the Company or such Guarantor, (b) any Indebtedness of the Company or any Guarantor to a Subsidiary of the Company, or to a joint venture in which the Company or any Restricted Subsidiary has an interest, (c) any Indebtedness of the Company or any Guarantor, to the extent not permitted by Section 4.09 or Section 4.06 hereof; provided that Indebtedness under the Credit Agreement shall be deemed Senior Indebtedness if the Company or any Guarantor, as the case may be, believed in good faith at the time of incurrence that it was permitted to incur such Indebtedness under this Indenture and delivers an Officers’ Certificate to the lenders under the Credit Agreement to such effect, (d) any repurchase, redemption or other obligation in respect of Disqualified Stock, (e) any Indebtedness to any employee of the Company or any of its Subsidiaries, (f) any liability for taxes owed or owing by the Company or any Guarantor, or (g) any Trade Payables.

          “ Senior Subordinated Obligations ” means any principal of, premium, if any, or interest on the Notes payable pursuant to the terms of the Notes or any Note Guarantee or upon acceleration, including any amounts received upon the exercise of rights of rescission or other rights of action (including claims for damages) or otherwise, to the extent relating to the purchase price of the Notes or amounts corresponding to such principal, premium, if any, or interest on the Notes.

          “ Shelf Registration Statement ” means the Shelf Registration Statement as defined in the Registration Rights Agreement.

          “ Significant Subsidiary ” means any Subsidiary that would be a “significant subsidiary” as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated pursuant to the Securities Act, as such Regulation is in effect on the date of this Indenture.

          “ Standard Securitization Undertakings ” means representations, warranties, covenants, indemnities and guarantees of performance entered into by the Company or any Subsidiary of the Company which the Company has determined in good faith to be customary in a Receivables Financing including, without limitation, those relating to the servicing of the assets of a Receivables Subsidiary, it being understood that any Receivables Repurchase Obligation shall be deemed to be a Standard Securitization Undertaking.

          “ Stated Maturity ” means, with respect to any installment of principal on any series of Indebtedness, the date on which the final payment of principal was scheduled to be paid in the documentation governing such Indebtedness as of the date of this Indenture, and will not include any contingent obligations to repay, redeem or repurchase any such principal prior to the date originally scheduled for the payment thereof.

          “ Subsidiary ” means, with respect to any specified Person:

     (1) any corporation, association or other business entity of which more than 50% of the total voting power of shares of Capital Stock entitled (without regard to the occurrence of any contingency and after giving effect to any voting agreement or stockholders’ agreement that effectively transfers voting power) to vote in the election of directors, managers or trustees of the corporation, association or other business entity is at the time owned or controlled, directly or indirectly, by that Person or one or more of the other Subsidiaries of that Person (or a combination thereof); and

     (2) any partnership (a) the sole general partner or the managing general partner of which is such Person or a Subsidiary of such Person or (b) the only general partners of which are that Person or one or more Subsidiaries of that Person (or any combination thereof).

          “ TIA ” means the Trust Indenture Act of 1939, as amended (15 U.S.C. §§ 77aaa-77bbbb).

          “ Total Assets ” means the total consolidated assets of the Company and its Restricted Subsidiaries, as shown on the most recent balance sheet of the Company.

          “ Trade Payables ” means, with respect to any Person, any accounts payable or any other indebtedness or monetary obligation to trade creditors created, assumed or guaranteed by such Person or any of its Subsidiaries arising in the ordinary course of business in connection with the acquisition of goods or services.

          “ Transactions ” means, collectively, (1) the acquisition by First Reserve Fund X L.P. of all of the equity interests in Chart Industries, Inc. and each of Chart Industries, Inc.’s

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direct and indirect subsidiaries pursuant to the Merger Agreement, (2) the completion of and borrowings under the Credit Agreement as described in the Offering Memorandum and (3) the offering of the Notes and, with respect to each of (1), (2) and (3), the transactions contemplated thereby.

          “ Treasury Rate ” means, as of any redemption date, the yield to maturity as of such redemption date of United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical Release H.15 (519) that has become publicly available at least two Business Days prior to the redemption date (or, if such Statistical Release is no longer published, any publicly available source of similar market data)) most nearly equal to the period from the redemption date to October 15, 2010; provided , however , that if the period from the redemption date to October 15, 2010, is less than one year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year will be used.

          “ Trustee ” means The Bank of New York, a New York banking corporation, until a successor replaces it in accordance with the applicable provisions of this Indenture and thereafter means the successor serving hereunder.

          “ Unlegended Regulation S Global Note ” means a permanent Global Note in the form of Exhibit A bearing the Global Note Legend, deposited with or on behalf of and registered in the name of the Depositary or its nominee and issued upon expiration of the Restricted Period.

          “ Unrestricted Definitive Note ” means a Definitive Note that does not bear and is not required to bear the Private Placement Legend.

          “ Unrestricted Global Note ” means a Global Note that does not bear and is not required to bear the Private Placement Legend.

          “ Unrestricted Subsidiary ” means:

     (1) any Subsidiary of the Company that at the time of determination shall be designated an Unrestricted Subsidiary by the Board of Directors of the Company in the manner provided below; and

     (2) any Subsidiary of an Unrestricted Subsidiary.

          The Board of Directors of the Company may designate any Subsidiary of the Company (including any newly acquired or newly formed Subsidiary of the Company) to be an Unrestricted Subsidiary unless such Subsidiary or any of its Subsidiaries owns any Equity Interests or Indebtedness of, or owns or holds any Lien on any property of, the Company or any other Subsidiary of the Company that is not a Subsidiary of the Subsidiary to be so designated; provided , however , that the Subsidiary to be so designated and its Subsidiaries do not at the time of designation have and do not thereafter incur any Non-recourse Debt (other than guarantees of performance of the Unrestricted Subsidiary in the ordinary course of business, excluding guarantees of Indebtedness for borrowed money); provided further , however , that either:

     (a) the Subsidiary to be so designated has total consolidated assets of $1,000 or less; or

     (b) if such Subsidiary has consolidated assets greater than $1,000, then such designation would be permitted under Section 4.07 hereof.

          The Board of Directors of the Company may designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided , however , that immediately after giving effect to such designation:

     (x) (1) the Company could incur $1.00 of additional Indebtedness pursuant to the Fixed Charge Coverage Ratio test described in Section 4.09 hereof or (2) the Fixed Charge Coverage Ratio for the Company and its Restricted Subsidiaries would be greater than such ratio for the Company and its Restricted Subsidiaries immediately prior to such designation, in each case on a pro forma basis taking into account such designation, and

     (y) no Event of Default shall have occurred and be continuing.

          Any such designation by the Board of Directors of the Company shall be evidenced to the Trustee by promptly filing with the Trustee a copy of the resolution of the Board of Directors of the Company giving effect to such designation and an Officers’ Certificate certifying that such designation complied with the foregoing provisions.

          “ U.S. Person ” means a U.S. Person as defined in Rule 902(k) promulgated under the Securities Act.

          “ Voting Stock ” of any specified Person as of any date means the Capital Stock of such Person that is at the time entitled to vote in the election of the Board of Directors of such Person.

          “ Weighted Average Life to Maturity ” means, when applied to any Indebtedness at any date, the number of years obtained by dividing:

     (1) the sum of the products obtained by multiplying (a) the amount of each then remaining installment, sinking fund, serial maturity or other required payments of principal, including payment at final maturity, in respect of the Indebtedness, by (b) the number of years (calculated to the nearest one-twelfth) that will elapse between such date and the making of such payment; by

     (2) the then outstanding principal amount of such Indebtedness.

          “ Wholly Owned Restricted Subsidiary ” of any specified Person means a Subsidiary of such Person all of the outstanding Capital Stock or other ownership interests of which (other than directors’ qualifying shares) will at the time be owned by such Person or by one or more Wholly Owned Restricted Subsidiaries of such Person.

Section 1.02 Other Definitions .

Section 1.03 Incorporation by Reference of Trust Indenture Act .

          Whenever this Indenture refers to a provision of the TIA, the provision is incorporated by reference in and made a part of this Indenture.

          The following TIA terms used in this Indenture have the following meanings:

          “ indenture securities ” means the Notes and the Note Guarantees;

          “ indenture security Holder ” means a Holder of a Note;

          “ indenture to be qualified ” means this Indenture;

          “ indenture trustee ” or “ institutional trustee ” means the Trustee; and

          “ obligor ” on the indenture securities means the Company and the Guarantors, respectively, and any successor obligor upon the indenture securities, respectively.

          All other terms used in this Indenture that are defined by the TIA, defined by TIA reference to another statute or defined by SEC rule under the TIA have the meanings so assigned to them by such definitions.

Section 1.04 Rules of Construction .

     Unless the context otherwise requires:

     (i) a term has the meaning assigned to it;

     (ii) an accounting term not otherwise defined has the meaning assigned to it in accordance with GAAP;

     (iii) “or” is not exclusive;

     (iv) words in the singular include the plural, and words in the plural include the singular;

     (v) “will” shall be interpreted to express a command;

     (vi) provisions apply to successive events and transactions; and

     (vii) references to sections of or rules under the Securities Act will be deemed to include substitute, replacement of successor sections or rules adopted by the SEC from time to time.

ARTICLE 2

THE NOTES

Section 2.01 Form and Dating .

          (a)  General . The Notes and the Trustee’s certificate of authentication will be substantially in the form of Exhibit A hereto. The Notes may have notations, legends or endorsements required by law, stock exchange rule or usage. Each Note will be dated the date of its authentication. The Notes shall be in denominations of $1,000 and integral multiples thereof.

          The terms and provisions contained in the Notes will constitute, and are hereby expressly made, a part of this Indenture and the Company, the Guarantors and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. However, to the extent any provision of any Note conflicts with the express provisions of this Indenture, the provisions of this Indenture shall govern and be controlling.

          (b)  Global Notes . Notes issued in global form will be substantially in the form of Exhibit A hereto (including the Global Note Legend thereon and the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Notes issued in definitive form will be substantially in the form of Exhibit A hereto (but without the Global Note Legend thereon and without the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Each Global Note will represent such of the outstanding Notes as will be specified therein and each shall provide that it represents the aggregate principal amount of outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of outstanding Notes represented thereby may from time to time be reduced or increased, as appropriate, to reflect exchanges and

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redemptions. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the aggregate principal amount of outstanding Notes represented thereby will be made by the Trustee or the Custodian, at the direction of the Trustee, in accordance with instructions given by the Holder thereof as required by Section 2.06 hereof.

          (c)  Regulation S Global Notes . Notes offered and sold in reliance on Regulation S shall be issued initially in the form of the Legended Regulation S Global Note, which shall be deposited on behalf of the purchasers of the Notes represented thereby with the Trustee, as custodian for The Depository Trust Company ( “DTC” ) in New York, New York, and registered in the name of the Depositary or the nominee of the Depositary for the accounts of designated agents holding on behalf of Euroclear or Clearstream, duly executed by the Company and authenticated by the Trustee as hereinafter provided. Following the termination of the Restricted Period, beneficial interests in the Legended Regulation S Global Note shall be exchanged for beneficial interests in Unlegended Regulation S Global Notes pursuant to Section 2.06 and the Applicable Procedures. Simultaneously with the authentication of Unlegended Regulation S Global Notes, the Trustee shall cancel the Legended Regulation S Global Note. The aggregate principal amount of the Regulation S Global Notes may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depositary or its nominee, as the case may be, in connection with transfers of interest as hereinafter provided.

          (d)  Euroclear and Clearstream Procedures Applicable. The provisions of the “Operating Procedures of the Euroclear System” and “Terms and Conditions Governing Use of Euroclear” and the “General Terms and Conditions of Clearstream Banking” and “Customer Handbook” of Clearstream will be applicable to transfers of beneficial interests in the Regulation S Global Notes that are held by Participants through Euroclear or Clearstream.

Section 2.02 Execution and Authentication .

          At least one Officer must sign the Notes for the Company by manual or facsimile signature.

          If an Officer whose signature is on a Note no longer holds that office at the time a Note is authenticated, the Note will nevertheless be valid.

          A Note will not be valid until authenticated by the manual signature of the Trustee. The signature will be conclusive evidence that the Note has been authenticated under this Indenture.

          The Trustee will, upon receipt of a written order of the Company signed by two Officers of the Company (an “ Authentication Order ”), authenticate Notes for original issue that may be validly issued under this Indenture, including any Additional Notes and any Exchange Notes. The aggregate principal amount of Notes outstanding at any time may not exceed the aggregate principal amount of Notes authorized for issuance by the Company pursuant to one or more Authentication Orders, except as provided in Section 2.07 hereof.

          The Trustee may appoint an authenticating agent acceptable to the Company to authenticate Notes. An authenticating agent may authenticate Notes whenever the Trustee may do so. Each reference in this Indenture to authentication by the Trustee includes authentication

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by such agent. An authenticating agent has the same rights as an Agent to deal with Holders or an Affiliate of the Company.

Section 2.03 Registrar and Paying Agent .

          The Company will maintain an office or agency where Notes may be presented for registration of transfer or for exchange (“ Registrar ”) and an office or agency where Notes may be presented for payment (“ Paying Agent ”). The Registrar will keep a register of the Notes and of their transfer and exchange. The Company may appoint one or more co-registrars and one or more additional paying agents. The term “Registrar” includes any co-registrar and the term “Paying Agent” includes any additional paying agent. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company will notify the Trustee in writing of the name and address of any Agent not a party to this Indenture. If the Company fails to appoint or maintain another entity as Registrar or Paying Agent, the Trustee shall act as such. The Company or any of its Subsidiaries may act as Paying Agent or Registrar.

          The Company may remove any Registrar or Paying Agent upon written notice to such Registrar or Paying Agent and to the Trustee; provided , however , that no such removal shall become effective until (i) if applicable, acceptance of an appointment by a successor as evidenced by an appropriate agreement entered into by the Company and such successor Registrar or Paying Agent, as the case may be, and delivered to the Trustee or (ii) notification to the Trustee that the Trustee shall serve as Registrar or Paying Agent until the appointment of a successor in accordance with clause (i) above. The Registrar or Paying Agent may resign at any time upon written notice to the Company and the Trustee; provided , however , that the Trustee may resign as Paying Agent or Registrar only if the Trustee also resigns as Trustee in accordance with Section 7.08.

          The Company initially appoints DTC to act as Depositary with respect to the Global Notes.

          The Company initially appoints the Trustee to act as the Registrar and Paying Agent and to act as Custodian with respect to the Global Notes.

Section 2.04 Paying Agent to Hold Money in Trust .

          The Company will require each Paying Agent other than the Trustee to agree in writing that the Paying Agent will hold in trust for the benefit of Holders or the Trustee all money held by the Paying Agent for the payment of principal, premium or Additional Interest, if any, or interest on the Notes, and will notify the Trustee of any default by the Company in making any such payment. While any such default continues, the Trustee may require a Paying Agent to pay all money held by it to the Trustee. The Company at any time may require a Paying Agent to pay all money held by it to the Trustee and to account for any funds disbursed by such Paying Agent. Upon payment over to the Trustee, the Paying Agent (if other than the Company or a Subsidiary) will have no further liability for the money. If the Company or a Subsidiary acts as Paying Agent, it will segregate and hold in a separate trust fund for the benefit of the Holders all money held by it as Paying Agent. Upon any bankruptcy or reorganization proceedings relating to the Company, the Trustee will serve as Paying Agent for the Notes.

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Section 2.05 Holder Lists .

          The Trustee will preserve in as current a form as is reasonably practicable the most recent list available to it of the names and addresses of all Holders and shall otherwise comply with TIA § 312(a). If the Trustee is not the Registrar, the Company will furnish or cause the Registrar to furnish to the Trustee at least seven Business Days before each interest payment date and at such other times as the Trustee may request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of the Holders of Notes and the Company shall otherwise comply with TIA § 312(a).

Section 2.06 Transfer and Exchange .

          (a)  Transfer and Exchange of Global Notes . A Global Note may not be transferred except as a whole by the Depositary to a nominee of the Depositary, by a nominee of the Depositary to the Depositary or to another nominee of the Depositary, or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary. All Global Notes will be exchanged by the Company for Definitive Notes if:

     (1) the Company delivers to the Trustee notice from the Depositary that it is unwilling or unable to continue to act as Depositary or that it is no longer a clearing agency registered under the Exchange Act and in each case a successor Depositary is not appointed by the Company within 120 days after the date of such notice from the Depositary;

     (2) Subject to the procedures of the Depository, the Company in its sole discretion determines that the Global Notes (in whole but not in part) should be exchanged for Definitive Notes and delivers a written notice to such effect to the Trustee; provided that in no event shall the Legended Regulation S Global Note be exchanged by the Company for Definitive Notes prior to the expiration of the Restricted Period and the receipt by the Registrar of any certificates required pursuant to Rule 903(b)(3)(ii)(B) under the Securities Act; or

     (3) there shall have occurred and be continuing an Event of Default with respect to the Notes.

          Upon the occurrence of either of the preceding events in (1) or (2) above, Definitive Notes shall be issued in such names as the Depositary shall instruct the Trustee. Global Notes also may be exchanged or replaced, in whole or in part, as provided in Sections 2.07 and 2.10 hereof. Every Note authenticated and delivered in exchange for, or in lieu of, a Global Note or any portion thereof, pursuant to this Section 2.06 or Section 2.07 or 2.10 hereof, shall be authenticated and delivered in the form of, and shall be, a Global Note. A Global Note may not be exchanged for another Note other than as provided in this Section 2.06(a), however, beneficial interests in a Global Note may be transferred and exchanged as provided in Section 2.06(b), (c) or (f) hereof.

          (b)  Transfer and Exchange of Beneficial Interests in the Global Notes . The transfer and exchange of beneficial interests in the Global Notes will be effected through the Depositary, in accordance with the provisions of this Indenture and the Applicable Procedures.

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Beneficial interests in the Restricted Global Notes will be subject to restrictions on transfer comparable to those set forth herein to the extent required by the Securities Act. Transfers of beneficial interests in the Global Notes also will require compliance with either subparagraph (1) or (2) below, as applicable, as well as one or more of the other following subparagraphs, as applicable:

     (1) Transfer of Beneficial Interests in the Same Global Note . Beneficial interests in any Restricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in the same Restricted Global Note in accordance with the transfer restrictions set forth in the Private Placement Legend; provided , however , that prior to the expiration of the Restricted Period, transfers of beneficial interests in the Legended Regulation S Global Note may not be made to a U.S. Person or for the account or benefit of a U.S. Person (other than a Placement Agent). Beneficial interests in any Unrestricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note. No written orders or instructions shall be required to be delivered to the Registrar to effect the transfers described in this Section 2.06(b)(1).

     (2) All Other Transfers and Exchanges of Beneficial Interests in Global Notes. In connection with all transfers and exchanges of beneficial interests that are not subject to Section 2.06(b)(1) above, the transferor of such beneficial interest must deliver to the Registrar either:

(A) both:

     (i) a written order from a Participant or an Indirect Participant given to the Depositary in accordance with the Applicable Procedures directing the Depositary to credit or cause to be credited a beneficial interest in another Global Note in an amount equal to the beneficial interest to be transferred or exchanged; and

     (ii) instructions given in accordance with the Applicable Procedures containing information regarding the Participant account to be credited with such increase; or

(B) both:

     (i) a written order from a Participant or an Indirect Participant given to the Depositary in accordance with the Applicable Procedures directing the Depositary to cause to be issued a Definitive Note in an amount equal to the beneficial interest to be transferred or exchanged; and

     (ii) instructions given by the Depositary to the Registrar containing information regarding the Person in whose name such Definitive Note shall be registered to effect the transfer or exchange referred to in (i) above;

provided that in no event shall Definitive Notes be issued upon the transfer or exchange of beneficial interests in the Legended Regulation S Global Note prior to the expiration of the Restricted Period and the receipt by the Registrar of any certificates required pursuant to Rule 903 under the Securities Act.

Upon consummation of a Registered Exchange Offer by the Company in accordance with Section 2.06(f) hereof, the requirements of this Section 2.06(b)(2) shall be deemed to have been satisfied upon receipt by the Registrar of the instructions contained in the Letter of Transmittal delivered by the Holder of such beneficial interests in the Restricted Global Notes. Upon satisfaction of all of the requirements for transfer or exchange of beneficial interests in Global Notes contained in this Indenture and the Notes or otherwise applicable under the Securities Act, the Trustee shall adjust the principal amount of the relevant Global Note(s) pursuant to Section 2.06(h) hereof.

     (3)  Transfer of Beneficial Interests to Another Restricted Global Note. A beneficial interest in any Restricted Global Note may be transferred to a Person who takes delivery thereof in the form of a beneficial interest in another Restricted Global Note if the transfer complies with the requirements of Section 2.06(b)(2) above and the Registrar receives the following:

     (A) if the transferee will take delivery in the form of a beneficial interest in the 144A Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof;

     (B) if the transferee will take delivery in the form of a beneficial interest in the Legended Regulation S Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof; and

     (C) if the transferee will take delivery in the form of a beneficial interest in the IAI Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3)(d) thereof, if applicable.

     (4) Transfer and Exchange of Beneficial Interests in a Restricted Global Note for Beneficial Interests in an Unrestricted Global Note. A beneficial interest in any Restricted Global Note may be exchanged by any holder thereof for a beneficial interest in an Unrestricted Global Note or transferred to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note if the exchange or transfer complies with the requirements of Section 2.06(b)(2) above and:

     (A) such exchange or transfer is effected pursuant to the Registered Exchange Offer in accordance with the Registration Rights Agreement and the holder of the beneficial interest to be transferred, in the case of an exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Broker-Dealer, (ii) a Person participating in the

distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company;

     (B) such transfer is effected pursuant to the Shelf Registration Statement in accordance with the Registration Rights Agreement;

     (C) such transfer is effected by a Broker-Dealer pursuant to the Exchange Offer Registration Statement in accordance with the Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (i) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(a) thereof; or

     (ii) if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note, a certificate from such holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this subparagraph (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

          If any such transfer is effected pursuant to subparagraph (B) or (D) above at a time when an Unrestricted Global Note has not yet been issued, the Company shall issue and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of beneficial interests transferred pursuant to subparagraph (B) or (D) above.

   (5) Transfer and Exchange of Beneficial Interests in an Unrestricted Global Note for Beneficial Interests in a Restricted Global Note. Beneficial interests in an Unrestricted Global Note cannot be exchanged for, or transferred to Persons who take delivery thereof in the form of, a beneficial interest in a Restricted Global Note.

   (c)  Transfer and Exchange of Beneficial Interests for Definitive Notes.

          (1) Beneficial Interests in Restricted Global Notes to Restricted Definitive Notes. If any holder of a beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note or to transfer such beneficial interest to a

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Person who takes delivery thereof in the form of a Restricted Definitive Note, then, upon receipt by the Registrar of the following documentation:

     (A) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (2)(a) thereof;

     (B) if such beneficial interest is being transferred to a QIB in accordance with Rule 144A, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof;

     (C) if such beneficial interest is being transferred to a Non-U.S. Person in an offshore transaction in accordance with Rule 903 or Rule 904, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof;

     (D) if such beneficial interest is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(a) thereof;

     (E) if such beneficial interest is being transferred to an Institutional Accredited Investor in reliance on an exemption from the registration requirements of the Securities Act other than those listed in subparagraphs (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3)(d) thereof, if applicable;

     (F) if such beneficial interest is being transferred to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof; or

     (G) if such beneficial interest is being transferred pursuant to an effective registration statement under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(c) thereof,

the Trustee shall cause the aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 2.06(h) hereof, and the Company shall execute and the Trustee shall authenticate upon receipt of an Authentication Order in accordance with Section 2.02 hereof and deliver to the Person designated in the instructions a Definitive Note in the appropriate principal amount. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 2.06(c) shall be registered in such name or names and in such authorized denomination or denominations as the holder of such beneficial interest shall instruct the Registrar through instructions from the Depositary and the Participant or Indirect Participant. The Trustee shall deliver such Definitive Notes to the Persons in whose names such Notes are so registered. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 2.06(c)(1) shall bear the Private Placement Legend and shall be subject to all restrictions on transfer contained therein.

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          (2) Beneficial Interests in Legended Regulation S Global Note to Definitive Notes . Notwithstanding Sections 2.06(c)(1)(A) and (C) hereof, a beneficial interest in the Legended Regulation S Global Note may not be exchanged for a Definitive Note or transferred to a Person who takes delivery thereof in the form of a Definitive Note prior to (A) the expiration of the Restricted Period and (B) the receipt by the Registrar of any certificates required pursuant to Rule 903(b)(3)(ii)(B) under the Securities Act; except in the case of a transfer pursuant to an exemption from the registration requirements of the Securities Act other than Rule 903 or Rule 904.

          (3) Beneficial Interests in Restricted Global Notes to Unrestricted Definitive Notes. A holder of a beneficial interest in a Restricted Global Note may exchange such beneficial interest for an Unrestricted Definitive Note or may transfer such beneficial interest to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note only if:

     (A) such exchange or transfer is effected pursuant to the Registered Exchange Offer in accordance with the Registration Rights Agreement and the holder of such beneficial interest, in the case of an exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Broker-Dealer, (ii) a Person participating in the distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company;

     (B) such transfer is effected pursuant to the Shelf Registration Statement in accordance with the Registration Rights Agreement;

     (C) such transfer is effected by a Broker-Dealer pursuant to the Exchange Offer Registration Statement in accordance with the Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (i) if the holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for an Unrestricted Definitive Note, a certificate from such holder in the form of Exhibit C hereto, including the certifications in item (1)(b) thereof; or

     (ii) if the holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a certificate from such holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this subparagraph (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

          (4) Beneficial Interests in Unrestricted Global Notes to Unrestricted Definitive Notes. If any holder of a beneficial interest in an Unrestricted Global Note proposes to exchange such beneficial interest for a Definitive Note or to transfer such beneficial interest to a Person who takes delivery thereof in the form of a Definitive Note, then, upon satisfaction of the conditions set forth in Section 2.06(b)(2) hereof, the Trustee will cause the aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 2.06(h) hereof, and the Company will execute and the Trustee will authenticate upon receipt of an Authentication Order in accordance with Section 2.02 hereof and deliver to the Person designated in the instructions a Definitive Note in the appropriate principal amount. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.06(c)(4) will be registered in such name or names and in such authorized denomination or denominations as the holder of such beneficial interest requests through instructions to the Registrar from or through the Depositary and the Participant or Indirect Participant. The Trustee will deliver such Definitive Notes to the Persons in whose names such Notes are so registered. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.06(c)(4) will not bear the Private Placement Legend.

          (d)  Transfer and Exchange of Definitive Notes for Beneficial Interests.

          (1) Restricted Definitive Notes to Beneficial Interests in Restricted Global Notes. If any Holder of a Restricted Definitive Note proposes to exchange such Note for a beneficial interest in a Restricted Global Note or to transfer such Restricted Definitive Notes to a Person who takes delivery thereof in the form of a beneficial interest in a Restricted Global Note, then, upon receipt by the Registrar of the following documentation:

     (A) if the Holder of such Restricted Definitive Note proposes to exchange such Note for a beneficial interest in a Restricted Global Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (2)(b) thereof;

     (B) if such Restricted Definitive Note is being transferred to a QIB in accordance with Rule 144A, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof;

     (C) if such Restricted Definitive Note is being transferred to a Non-U.S. Person in an offshore transaction in accordance with Rule 903 or Rule 904, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof;

     (D) if such Restricted Definitive Note is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(a) thereof;

     (E) if such Restricted Definitive Note is being transferred to an Institutional Accredited Investor in reliance on an exemption from the registration requirements of the Securities Act other than those listed in subparagraphs (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3)(d) thereof, if applicable;

     (F) if such Restricted Definitive Note is being transferred to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof; or

     (G) if such Restricted Definitive Note is being transferred pursuant to an effective registration statement under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(c) thereof,

the Trustee will cancel the Restricted Definitive Note, increase or cause to be increased the aggregate principal amount of, in the case of clause (A) above, the appropriate Restricted Global Note, in the case of clause (B) above, the 144A Global Note, in the case of clause (C) above, the Regulation S Global Note, and in all other cases, the IAI Global Note.

          (2) Restricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A Holder of a Restricted Definitive Note may exchange such Note for a beneficial interest in an Unrestricted Global Note or transfer such Restricted Definitive Note to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note only if:

     (A) such exchange or transfer is effected pursuant to the Registered Exchange Offer in accordance with the Registration Rights Agreement and the Holder, in the case of an exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Broker-Dealer, (ii) a Person participating in the distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company;

     (B) such transfer is effected pursuant to the Shelf Registration Statement in accordance with the Registration Rights Agreement;

     (C) such transfer is effected by a Broker-Dealer pursuant to the Exchange Offer Registration Statement in accordance with the Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (i) if the Holder of such Definitive Notes proposes to exchange such Notes for a beneficial interest in the Unrestricted Global Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(c) thereof; or

     (ii) if the Holder of such Definitive Notes proposes to transfer such Notes to a Person who shall take delivery thereof in the form of a beneficial interest in the Unrestricted Global Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this subparagraph (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the

Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

          Upon satisfaction of the conditions of any of the subparagraphs in this Section 2.06(d)(2), the Trustee will cancel the Definitive Notes and increase or cause to be increased the aggregate principal amount of the Unrestricted Global Note.

          (3) Unrestricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A Holder of an Unrestricted Definitive Note may exchange such Note for a beneficial interest in an Unrestricted Global Note or transfer such Definitive Notes to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note at any time. Upon receipt of a request for such an exchange or transfer, the Trustee will cancel the applicable Unrestricted Definitive Note and increase or cause to be increased the aggregate principal amount of one of the Unrestricted Global Notes.

          If any such exchange or transfer from a Definitive Note to a beneficial interest is effected pursuant to subparagraphs (2)(B), (2)(D) or (3) above at a time when an Unrestricted Global Note has not yet been issued, the Company will issue and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee will authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the principal amount of Definitive Notes so transferred.

          (e)  Transfer and Exchange of Definitive Notes for Definitive Notes. Upon request by a Holder of Definitive Notes and such Holder’s compliance with the provisions of this Section 2.06(e), the Registrar will register the transfer or exchange of Definitive Notes. Prior to such registration of transfer or exchange, the requesting Holder must present or surrender to the Registrar the Definitive Notes duly endorsed or accompanied by a written instruction of transfer in form satisfactory to the Registrar duly executed by such Holder or by its attorney, duly authorized in writing. In addition, the requesting Holder must provide any additional certifications, documents and information, as applicable, required pursuant to the following provisions of this Section 2.06(e).

     (1) Restricted Definitive Notes to Restricted Definitive Notes. Any Restricted Definitive Note may be transferred to and registered in the name of Persons who take delivery thereof in the form of a Restricted Definitive Note if the Registrar receives the following:

     (A) if the transfer will be made pursuant to Rule 144A, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof;

     (B) if the transfer will be made pursuant to Rule 903 or Rule 904, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof; and

     (C) if the transfer will be made pursuant to any other exemption from the registration requirements of the Securities Act, then the transferor must deliver

a certificate in the form of Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3) thereof, if applicable.

     (2) Restricted Definitive Notes to Unrestricted Definitive Notes. Any Restricted Definitive Note may be exchanged by the Holder thereof for an Unrestricted Definitive Note or transferred to a Person or Persons who take delivery thereof in the form of an Unrestricted Definitive Note if:

     (A) such exchange or transfer is effected pursuant to the Registered Exchange Offer in accordance with the Registration Rights Agreement and the Holder, in the case of an exchange, or the transferee, in the case of a transfer, certifies in the applicable Letter of Transmittal that it is not (i) a Broker-Dealer, (ii) a Person participating in the distribution of the Exchange Notes or (iii) a Person who is an affiliate (as defined in Rule 144) of the Company;

     (B) any such transfer is effected pursuant to the Shelf Registration Statement in accordance with the Registration Rights Agreement;

     (C) any such transfer is effected by a Broker-Dealer pursuant to the Exchange Offer Registration Statement in accordance with the Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (i) if the Holder of such Restricted Definitive Notes proposes to exchange such Notes for an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(d) thereof; or

     (ii) if the Holder of such Restricted Definitive Notes proposes to transfer such Notes to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this subparagraph (D), if the Registrar so requests, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

     (3) Unrestricted Definitive Notes to Unrestricted Definitive Notes. A Holder of Unrestricted Definitive Notes may transfer such Notes to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note. Upon receipt of a request to register such a transfer, the Registrar shall register the Unrestricted Definitive Notes pursuant to the instructions from the Holder thereof.

          (f)  Registered Exchange Offer. Upon the occurrence of the Registered Exchange Offer in accordance with the Registration Rights Agreement, the Company will issue and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee will authenticate:

     (1) one or more Unrestricted Global Notes in an aggregate principal amount equal to the principal amount of the beneficial interests in the Restricted Global Notes accepted for exchange in the Registered Exchange Offer by Persons that certify in the applicable Letters of Transmittal that (A) they are not Broker-Dealers, (B) they are not participating in a distribution of the Exchange Notes and (C) they are not affiliates (as defined in Rule 144) of the Company; and

     (2) Unrestricted Definitive Notes in an aggregate principal amount equal to the principal amount of the Restricted Definitive Notes accepted for exchange in the Registered Exchange Offer by Persons that certify in the applicable Letters of Transmittal that (A) they are not Broker-Dealers, (B) they are not participating in a distribution of the Exchange Notes and (C) they are not affiliates (as defined in Rule 144) of the Company.

          Concurrently with the issuance of such Notes, the Trustee will cause the aggregate principal amount of the applicable Restricted Global Notes to be reduced accordingly, and the Company will execute and the Trustee will authenticate upon receipt of an Authentication Order in accordance with Section 2.02 hereof and deliver to the Persons designated by the Holders of Definitive Notes so accepted Unrestricted Definitive Notes in the appropriate principal amount.

          (g)  Legends. The following legends will appear on the face of all Global Notes and Definitive Notes issued under this Indenture unless specifically stated otherwise in the applicable provisions of this Indenture.

     (1) Private Placement Legend .

     (A) Except as permitted by subparagraph (B) below, each Global Note and each Definitive Note (and all Notes issued in exchange therefor or substitution thereof) shall bear the legend in substantially the following form:

“THIS NOTE HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT (A) IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) OR (B) IT IS NOT A U.S. PERSON AND IS ACQUIRING THIS NOTE IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH REGULATION S UNDER THE SECURITIES ACT, (2) AGREES THAT IT WILL NOT, PRIOR TO THE

EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THIS NOTE UNDER RULE 144(k) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), RESELL OR OTHERWISE TRANSFER THIS NOTE EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) INSIDE THE UNITED STATES TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), (E) INSIDE THE UNITED STATES TO AN INSTITUTIONAL “ACCREDITED INVESTOR” (AS DEFINED IN RULE 501(a)(1), (2), (3) OR (7) OF REGULATION D UNDER THE SECURITIES ACT) THAT, PRIOR TO SUCH TRANSFER, FURNISHED TO THE TRUSTEE A SIGNED LETTER CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE RESTRICTIONS ON TRANSFER OF THE NOTES (THE FORM OF WHICH CAN BE OBTAINED FROM THE TRUSTEE) AND IF SUCH TRANSFER IS IN RESPECT OF AN AGGREGATE PRINCIPAL AMOUNT OF NOTES LESS THAN $100,000, AN OPINION OF COUNSEL ACCEPTABLE TO THE COMPANY THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT OR (F) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER); AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS NOTE IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS NOTE PRIOR TO THE EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THIS NOTE UNDER RULE 144(k) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), THE HOLDER MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE TRUSTEE. IF THE PROPOSED TRANSFEREE IS AN INSTITUTIONAL ACCREDITED INVESTOR OR A PURCHASER WHO IS NOT A U.S. PERSON, THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO THE TRUSTEE AND THE COMPANY SUCH CERTIFICATIONS, LEGAL OPINIONS, OR OTHER INFORMATION AS EITHER OF THEM MAY REASONABLY REQUIRE TO CONFIRM THAT THE TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THIS LEGEND WILL

BE REMOVED UPON THE EARLIER OF THE TRANSFER OF THIS NOTE PURSUANT TO CLAUSE 2(F) ABOVE OR UPON ANY TRANSFER OF THIS NOTE UNDER RULE 144(k) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION). AS USED HEREIN, THE TERMS “OFFSHORE TRANSACTION,” “UNITED STATES” AND “U.S. PERSON” HAVE THE MEANINGS GIVEN TO THEM BY REGULATION S UNDER THE SECURITIES ACT.”

     (B) Notwithstanding the foregoing, any Global Note or Definitive Note issued pursuant to subparagraph (b)(4), (c)(3), (c)(4), (d)(2), (d)(3), (e)(2), (e)(3) or (f) of this Section 2.06 (and all Notes issued in exchange therefor or substitution thereof) will not bear the Private Placement Legend.

     (2) Global Note Legend . Each Global Note will bear a legend in substantially the following form:

“THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.06 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.11 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY. UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS MAY BE REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR SUCH OTHER

ENTITY AS MAY BE REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.”

     (3) Regulation S Global Note Legend . The Regulation S Global Note shall bear a legend in substantially the following form:

“THE RIGHTS ATTACHING TO THIS REGULATION S GLOBAL NOTE, AND THE CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR CERTIFICATED NOTES, ARE AS SPECIFIED IN THE INDENTURE (AS DEFINED HEREIN).”

          (h)  Cancellation and/or Adjustment of Global Notes. At such time as all beneficial interests in a particular Global Note have been exchanged for Definitive Notes or a particular Global Note has been redeemed, repurchased or canceled in whole and not in part, each such Global Note will be returned to or retained and canceled by the Trustee in accordance with Section 2.11 hereof. At any time prior to such cancellation, if any beneficial interest in a Global Note is exchanged for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global Note or for Definitive Notes, the principal amount of Notes represented by such Global Note will be reduced accordingly and an endorsement will be made on such Global Note by the Trustee or by the Depositary at the direction of the Trustee to reflect such reduction; and if the beneficial interest is being exchanged for or transferred to a Person who will take delivery thereof in the form of a beneficial interest in another Global Note, such other Global Note will be increased accordingly and an endorsement will be made on such Global Note by the Trustee or by the Depositary at the direction of the Trustee to reflect such increase.

          (i)  General Provisions Relating to Transfers and Exchanges.

          (1) To permit registrations of transfers and exchanges, the Company will execute and the Trustee will authenticate Global Notes and Definitive Notes upon receipt of an Authentication Order in accordance with Section 2.02 hereof or at the Registrar’s request.

          (2) No service charge will be made to a Holder of a beneficial interest in a Global Note or to a Holder of a Definitive Note for any registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in connection therewith (other than any such transfer taxes or similar governmental charge payable upon exchange or transfer pursuant to Sections 2.10, 3.06, 4.10, 4.15 and 9.05 hereof).

          (3) The Registrar will not be required to register the transfer of or exchange of any Note selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part.

          (4) All Global Notes and Definitive Notes issued upon any registration of transfer or exchange of Global Notes or Definitive Notes will be the valid obligations of the

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Company, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Global Notes or Definitive Notes surrendered upon such registration of transfer or exchange.

          (5) Neither the Registrar nor the Company will be required:

     (A) to issue, to register the transfer of or to exchange any Notes during a period beginning at the opening of business 15 days before the day of any selection of Notes for redemption under Section 3.02 hereof and ending at the close of business on the day of selection;

     (B) to register the transfer of or to exchange any Note selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part; or

     (C) to register the transfer of or to exchange a Note between a record date and the next succeeding interest payment date.

          (6) Prior to due presentment for the registration of a transfer of any Note, the Trustee, any Agent and the Company may deem and treat the Person in whose name any Note is registered as the absolute owner of such Note for the purpose of receiving payment of principal of and interest on such Notes and for all other purposes, and none of the Trustee, any Agent or the Company shall be affected by notice to the contrary.

          (7) The Trustee will authenticate Global Notes and Definitive Notes in accordance with the provisions of Section 2.02 hereof.

          (8) All certifications, certificates and Opinions of Counsel required to be submitted to the Registrar pursuant to this Section 2.06 to effect a registration of transfer or exchange may be submitted by facsimile.

Section 2.07 Replacement Notes .

          If any mutilated Note is surrendered to the Trustee or the Company and the Trustee receives evidence to its satisfaction of the destruction, loss or theft of any Note, the Company will issue and the Trustee, upon receipt of an Authentication Order, will authenticate a replacement Note if the Trustee’s requirements are met. If required by the Trustee or the Company, an indemnity bond must be supplied by the Holder that is sufficient in the judgment of the Trustee and the Company to protect the Company, the Trustee, any Agent and any authenticating agent from any loss that any of them may suffer if a Note is replaced. The Company may charge for their expenses in replacing a Note.

          Every replacement Note is an additional obligation of the Company and will be entitled to all of the benefits of this Indenture equally and proportionately with all other Notes duly issued hereunder.