| Owner: | Pennsylvania Railroad |
| Type: | Box Car |
| AAR Class: | XM: Box car for general service equipped with side or side and end doors. |
| AAR Type: | B302 |
| Detail Info: | Unequipped Box Car, Inside Length: 49' to 59', Sliding doors, inside width less than 9ft 6in, Door opening 8ft to 9ft |
| Plate: | B |
| PRR Class: | X45 |
| User Notes: | PRR built 50' XM |