| Owner: | Union Pacific Railroad Company |
| Type: | Bulkhead Flat |
| AAR Class: | FB: Bulkhead flat cars. Equipped with fixed or permanently attached movable bulkheads or ends a minimum of three feet in height and flat floor for general commodity loading. |
| AAR Type: | F241 |
| Detail Info: | Flat Car, Load Limit: 155,000-184,999lb, Inside length: less than 53ft |
| Plate: | C |
| UP Class: | F-90-1 |
