| Owner: | Southern Pacific |
| Type: | Box Car |
| AAR Class: | XL: 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: | A230 |
| Detail Info: | Equipped Box Car, Inside Length: Less than 49', cushion draft gear/underframe, Other type door/opening |
| Plate: | B |
| SP Class: | B-50-44 |
| User Notes: | blt SP |
