STRUCTURED ASSET INVESTMENT LOAN TRUST, SENIOR/SUBORDINATE CERTIFICATES

Investment Management Trust Agreement

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STRUCTURED ASSET SECURITI

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Title: STRUCTURED ASSET INVESTMENT LOAN TRUST, SENIOR/SUBORDINATE CERTIFICATES
Date: 8/30/2005

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Exhibit 99.1

LEHMAN BROTHERS

MORTGAGE BACKED SECURITIES

$2,414,746,000 (Approximate)

STRUCTURED ASSET INVESTMENT LOAN TRUST,

SERIES 2005-HE3

SENIOR/SUBORDINATE CERTIFICATES

Available Funds Floaters

No Hard Cap – Act/360 – No Delay

Investors are urged to read the final Prospectus Supplement and the related Prospectus, which will be filed with the Securities and Exchange Commission and may be accessed free of charge on the SEC’s web site, www.sec.gov. A copy of the Prospectus Supplement and Prospectus will be provided by Lehman Brothers Inc. upon request. (The Prospectus Supplement and Prospectus are referred to collectively as the "Offering Document"). The Offering Document contains important information about the offered securities that is not contained in these materials. Information contained herein does not purport to be complete and is subject to the same qualifications and assumptions, and should be considered by investors only in the light of the same warnings, lack of assurances and representations and other precautionary matters, as disclosed in the Offering Document. The analyses contained herein have been prepared on the basis of certain assumptions (including, in certain cases, assumptions specified by the recipient hereof) regarding payments, interest rates, losses and other matters, including, but not limited to, the assumptions described in the Offering Document. Lehman Brothers Inc., and any of its affiliates, make no representation or warranty as to the actual rate or timing of payments on any of the underlying assets or the payments or yield on the securities. This information supersedes any prior versions hereof.

*To 10% Call*
			Est.	Payment	Initial		Legal	Expected
	Approximate		WAL⁽²⁾	Window⁽²⁾	C/E⁽³⁾	Initial	Final	Ratings
Class	Size ($)⁽¹⁾	Benchmark	(yrs.)	(mos.)	(%)	Margin	Maturity	(S&P/Moody’s/Fitch)
A1⁽⁴⁾	496,344,000	1 M LIBOR	0.86	1-23	18.20%	TBD	9/25/2035	AAA/Aaa/AAA
A2⁽⁴⁾	230,375,000	1 M LIBOR	3.00	23-64	18.20%	TBD	9/25/2035	AAA/Aaa/AAA
A3⁽⁵⁾	704,964,000	1 M LIBOR	0.86	1-23	18.20%	TBD	9/25/2035	AAA/Aaa/AAA
A4⁽⁵⁾	327,103,000	1 M LIBOR	3.00	23-64	18.20%	TBD	9/25/2035	AAA/Aaa/AAA
A5^{(4) (5) (6)}	226,404,000	1 M LIBOR	6.21	64-77	18.20%	TBD	9/25/2035	AAA/Aaa/AAA
M1	103,142,000	1 M LIBOR	4.63	43-77	13.95%	TBD	9/25/2035	AA+/Aa1/AA+
M2	65,526,000	1 M LIBOR	4.53	42-77	11.25%	TBD	9/25/2035	AA/Aa2/AA
M3	53,391,000	1 M LIBOR	4.47	40-77	9.05%	TBD	9/25/2035	AA-/Aa3/AA-
M4	29,123,000	1 M LIBOR	4.44	40-77	7.85%	TBD	9/25/2035	A+/A1/A+
M5	25,482,000	1 M LIBOR	4.42	39-77	6.80%	TBD	9/25/2035	A/A2/A
M6	23,055,000	1 M LIBOR	4.41	39-77	5.85%	TBD	9/25/2035	A-/A3/A-
M7	20,628,000	1 M LIBOR	4.40	38-77	5.00%	TBD	9/25/2035	A-/Baa1/A-
M8	20,628,000	1 M LIBOR	4.38	38-77	4.15%	TBD	9/25/2035	BBB+/Baa2/BBB+
M9	19,415,000	1 M LIBOR	4.38	38-77	3.35%	TBD	9/25/2035	BBB/Baa3/BBB
M10	14,561,000	1 M LIBOR	4.37	37-77	2.75%	TBD	9/25/2035	BBB/Ba1/BBB
M11	24,269,000	1 M LIBOR	4.27	37-77	1.75%	TBD	9/25/2035	BBB/Ba2/BB+
B1	12,134,000	1 M LIBOR	3.97	37-65	1.25%	TBD	9/25/2035	BBB-/NR/NR
B2	18,202,000	1 M LIBOR	3.35	37-54	0.50%	TBD	9/25/2035	BB+/NR/NR

*To Maturity*
			Est.	Payment	Initial		Legal	Expected
	Approximate		WAL⁽²⁾	Window⁽²⁾	C/E⁽³⁾	Initial	Final	Ratings
Class	Size ($)⁽¹⁾	Benchmark	(yrs.)