| Owner: | Canadian National Railways |
| Type: | Box Car |
| AAR Class: | XLI: Insulated, Loader Equipped. Box car similar in design to "XM", with steel perforated side walls or equipped with interior side rails for securement of certain types of lading and/or permanently attached movable bulkheads. |
| AAR Type: | A144 |
| Detail Info: | Equipped Box Car, Inside Length: Less than 49', Plug door, opening less than 9 feet |
| Plate: | B |
| User Notes: | Heated Box, Insulated car |
