| Owner: | Canadian National Railways |
| Type: | Box Car |
| AAR Class: | MW: Maintenance of Way Class |
| AAR Type: | M100 |
| Detail Info: | Misc Cars, MW-M of W Equip |
| Plate: | B |
| Max Gross Weight: | 177000 |
| Load Limit: | 95700 |
| Dry Capacity: | 4932 |
| Ext L/W/H: | 47' 9" / 10' 8" / 15' 0" |
| Int L/W/H: | 40' 4" / 9' 2" / 10' 6" |
| User Notes: | Distributed Braking Car |