| Owner: | Union Pacific Railroad Company |
| Type: | Coil Steel Car |
| AAR Class: | GBSR: Specialty Open top car, having fixed sides, fixed or drop ends and solid bottom. Equipped with roof |
| AAR Type: | E644 |
| Detail Info: | Equipped Gondola, Inside Length: 52-61ft, Equipped with cushion draft gear/underframe, Capacity: Less than 3,000 cu ft *Light Density Service |
| Plate: | B |
| UP Class: | G-100-21 |
