| Owner: | Great Northern |
| 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 |
| GN Class: | BE |
| Max Gross Weight: | 110600 |
| Dry Capacity: | 107000 |
| User Notes: | 40' storage mail express boxcar with passenger steam lines, in Big Sky Blue, blt. GN, 1-1952 |
