| Owner: | Union Pacific Railroad Company |
| Type: | Open Hopper |
| AAR Class: | HT: Open top self-clearing car, having fixed sides and ends and bottom consisting of three or more divided hoppers with doors hinged crosswise of car and dumping between rails. |
| AAR Type: | H351 |
| Detail Info: | Unequipped Hopper, Load Limit: 185,000 and greater, Rotary coupler on one end |
| Plate: | B |
| Max Gross Weight: | 286000 |
| Load Limit: | 236300 |
| Dry Capacity: | 3895 |
| Ext L/W/H: | 53' 1" / 10' 8" / 13' 3" |
| User Notes: | Load Limit: 236300. RD-4 Rapid Discharge unit coal train hopper. |
