| Owner: | Union Pacific Railroad Company |
| Type: | Centerbeam Flat |
| AAR Class: | FBC: Flat car constructed with a center beam above the car deck from bulkhead to bulkhead. |
| AAR Type: | F483 |
| Detail Info: | Flat Car, Load Limit: 200,000lb and greater, Inside length: 60-75ft |
| Plate: | C |
| Max Gross Weight: | 286000 |
| Load Limit: | 224200 |
| Ext L/W/H: | 80' 5" / 9' 8" / 15' 6" |
| Int L/W/H: | 73' 0" / 4' 3" / 0' 0" |
| User Notes: | ex-SMW 737581 exx-SRY 286571 {to WFRX 737581 now FDDM 200517} |
