TERMS SHEET
This terms sheet contains selected information for quick reference only. You should read
this Supplement, particularly "Risk Factors," and each of the other documents listed under
"Available Information."
Sponsor: Barclays Capital Inc.
Trustee: Wells Fargo Bank, N.A.
Tax Administrator: The Trustee
Closing Date: October 30, 2007
Distribution Date: The 20th day of each month or, if the 20th day is not a Business Day, the
first Business Day thereafter, commencing in November 2007.
Trust Assets:
Trust
Asset
Group
Trust Asset Type
Certificate Rate
Original Term
To Maturity
(in years)
1
Ginnie Mae II
5.5%
30
2
Ginnie Mae II
6.5%
30
Security Groups: This series of Securities consists of multiple Security Groups (each, a
"Group"), as shown on the front cover of this Supplement and on Schedule I to this
Supplement. Payments on each Group will be based solely on payments on the Trust Asset
Group with the same numerical designation.
Assumed Characteristics of the Mortgage Loans Underlying the Trust Assets1:
Principal
Balance2
Weighted Average
Remaining Term to
Maturity (in months)
Weighted Average
Loan Age
(in months)
Weighted
Average
Mortgage Rate3
Group 1 Trust Assets
$104,000,000
311
43
5.904%
100,000,000
334
23
5.980%
$204,000,000
Group 2 Trust Assets
$267,281,105
358
2
6.914%
1As of October 1, 2007.
2Does not include the Group 2 Trust Assets that will be added to pay the
Trustee Fee.
3The Mortgage Loans underlying the Trust Assets may bear interest at rates
ranging from 0.25% to 1.50% per annum above the related Certificate Rate.
The actual remaining terms to maturity, loan ages and Mortgage Rates of many of the Mortgage
Loans will differ from the weighted averages shown above, perhaps significantly. See "The Trust
Assets – The Mortgage Loans" in this Supplement.
Issuance of Securities: The Securities, other than the Residual Securities, will initially be
issued in book-entry form through the book-entry system of the U.S. Federal Reserve Banks (the
S-3