| Owner: | Norfolk Southern |
| Type: | Box Car |
| AAR Class: | XM: Box car for general service equipped with side or side and end doors. |
| AAR Type: | B634 |
| Detail Info: | Unequipped Box Car, Inside Length: 69' to 79', cushion draft gear/underframe, Plug door, inside width 9ft 6in and over, Door opening 10ft to 11ft |
| Plate: | F |
| NS Class: | B231 |
| Max Gross Weight: | 286000 |
| Load Limit: | 208500 |
| Dry Capacity: | 7556 |
| Ext L/W/H: | 67' 2" / 10' 4" / 17' 0" |
| Int L/W/H: | 60' 9" / 9' 6" / 13' 2" |
| User Notes: | Built by Trinityrail; Load Limit: 208500 |
