| Owner: | Southern Pacific |
| Type: | Ballast Hopper |
| AAR Class: | HM: Open top self-clearing car, having fixed sides and ends and bottom consisting of two divided hoppers with doors hinged crosswise of car and dumping between rails. |
| AAR Type: | H340 |
| Detail Info: | Unequipped Hopper, Load Limit: 185,000 and greater, Non-rotary couplers |
| Plate: | B |
| SP Class: | H-100-29 |
| Max Gross Weight: | 263000 |
| Load Limit: | 204400 |
| Dry Capacity: | 2300 |
| Ext L/W/H: | 37' 11" / 10' 8" / 13' 0" |
