| Owner: | Canadian National Railways |
| Type: | Bulkhead Flat |
| AAR Class: | FBS: Specialty 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: | F451 |
| Detail Info: | Flat Car, Load Limit: 200,000lb and greater, Inside length: less than 53ft |
| Plate: | C |
| User Notes: | ex CN 667000 series |
