| Owner: | Union Pacific Railroad Company |
| Type: | Gondola |
| AAR Class: | GB: Open top car, having fixed sides, fixed or drop ends and solid bottom. |
| AAR Type: | G512 |
| Detail Info: | Unequipped Gondola, Inside length 52-61ft, greater than 9ft inside width, Steel Floor, solid ends, Inside height: 47-167 inches, Load Limit: 155,000-184,999 |
| Plate: | B |
| Max Gross Weight: | 220000 |
| Load Limit: | 159400 |
| Dry Capacity: | 2000 |
| Ext L/W/H: | 57' 1" / 10' 8" / 7' 7" |
| Int L/W/H: | 52' 6" / 9' 6" / 4' 0" |
