| DEAL NAME | MSM 2007-12 |
| Closing Date | 7/31/2007 |
| |
| Initial Collateral Characteristics | |
| Principal Balance ($) | 516,179,004 |
| |
| Sellers (Over 10%) | Morgan Stanley Mortgage Capital Inc.(53.65%),Morgan Stanley Credit Corporation(29.95%) |
| |
| Servicers (Over 10%) | GMAC Mortgage Corporation(37.29%),Morgan Stanley Credit Corp(29.95%),Saxon Mortgage, Inc.(28.35%) |
| |
| Number of Loans | 819 |
| Avg Loan Balance ($) | 630,255 |
| |
| Fixed/Floating | |
| % FRM | 100 |
| % ARM | 0 |
| % Short Arm | 0 |
| % 3/1 or 3/6 | 0 |
| % 5/1 or 5/6 | 0 |
| % 7/1 or 7/6 | 0 |
| % 10/1 or 10/6 | 0 |
| |
| % IO | 39.94 |
| Wtd Avg IO Term (months) | 120 |
| |
| Wtd Avg Current Mortgage Rate (%) | 6.414 |
| < 4.00% | 0 |
| 4.0000% - 4.9999% | 0 |
| 5.0000% - 5.9999% | 14.32 |
| 6.0000% - 6.9999% | 77.68 |
| 7.0000% - 7.9999% | 7.87 |
| 8.0000% - 8.9999% | 0.12 |
| 9.0000% - 9.9999% | 0.01 |
| 10.0000% - 10.9999% | 0 |
| 11.000% + | 0 |
| |
| Non-Zero Wtd Avg Margin (%) | 0 |
| Non-Zero Wtd Avg Initial Cap (%) | 0 |
| Non-Zero Wtd Avg Periodic Cap (%) | 0 |
| |
| Lien Composition | |
| % 1st Lien | 100 |
| % 2nd Lien | 0 |
| |
| Non-Zero Wtd Avg FICO | 746 |
| % FICO below 660 (inc. N/A) | 0.29 |
| % FICO below 620 (inc. N/A) | 0 |
| |
| Wtd Avg Orig LTV | 69.91 |
| % LTV > 80 | 5.65 |
| % LTV > 90 | 4.28 |
| % LTV > 95 | 3.78 |
| |
| Documentation Level | |
| % Full/Alt Documentation | 41.23 |
| % Stated Documentation | 1.72 |
| % Limited Documentation | 40.61 |
| % No Documentation | 2.66 |
| % No Ratio Documentation | 7.47 |
| % Lite Documentation | 6.31 |
| |
| % Owner Occupied | 88.76 |
| % Investor | 3.87 |
| % Second Home | 7.37 |
| |
| Loan Purpose | |
| % Cashout Refinance | 37.09 |
| % Purchase | 39.14 |
| % Rate Term Refinance | 23.76 |
| |
| State Concentration (Over 5%) | CA(52.06%),NY(8.06%),NJ(5.14%) |
| |
| % Prepay Penalty | 13.59 |
| |
| Wtd Avg Std Orig Term (months) | 343 |
| Wtd Avg Std Rem Term (months) | 341 |
| Wtd Average Loan Age (months) | 3 |
