Option One Mortgage Loan Trust 2007-6 Sample Contracts

OPTION ONE MORTGAGE ACCEPTANCE CORPORATION $967,884,000 (Approximate) Option One Mortgage Loan Trust 2007-6 Asset-Backed Certificates Series 2007-6 UNDERWRITING AGREEMENT

Underwriting Agreement • June 18th, 2007 • Option One Mortgage Loan Trust 2007-6 • Asset-backed securities • New York

• Contract Type
  Underwriting Agreement
• Filed
  June 18th, 2007
• Company
  Option One Mortgage Loan Trust 2007-6
• Industry
  Asset-backed securities
• Jurisdiction
  New York

Option One Mortgage Acceptance Corporation (the “Depositor”), a Delaware corporation, has authorized the issuance and sale of Option One Mortgage Loan Trust 2007-6, Asset-Backed Certificates, Series 2007-6, Class I-A-1 Certificates, Class II-A-1 Certificates, Class II-A-2 Certificates, Class II-A-3 Certificates, Class II-A-4 Certificates, Class M-1 Certificates, Class M-2 Certificates, Class M-3 Certificates, Class M-4 Certificates, Class M-5 Certificates, Class M-6 Certificates, Class M-7 Certificates, Class M-8 Certificates and Class M-9 Certificates (collectively, the “Underwritten Certificates”). Also issued are the Class M-10 Certificates, Class C Certificates, Class P Certificates, Class R Certificates and Class R-X Certificates (collectively, the “Non-Offered Certificates”). The Underwritten Certificates and the Non-Offered Certificates are referred to as the Certificates (the “Certificates”).