| Owner: | Montana Rail Link |
| Type: | Box Car |
| AAR Class: | XM: Box car for general service equipped with side or side and end doors. |
| AAR Type: | B635 |
| Detail Info: | Unequipped Box Car, Inside Length: 69' to 79', cushion draft gear/underframe, Plug door, inside width 9ft 6in and over, Door opening 11ft to 13ft |
| Plate: | F |
| Dry Capacity: | 7500 |
| User Notes: | ex-ATW 84046 {now CIBX 173831} |
