| Owner: | Norfolk Southern |
| Type: | Gondola |
| AAR Class: | GT: Open top car, having high fixed sides and fixed or hinged ends and solid bottom, suitable for unloading on dumping machines only. |
| AAR Type: | J311 |
| Detail Info: | Gondola, Load Limit: 185,000 and greater, Depressed Bottom, Inside Length: 36-48ft |
| Plate: | B |
| NS Class: | G99R |
| Max Gross Weight: | 286000 |
| Load Limit: | 228200 |
| Dry Capacity: | 3850 |
| Ext L/W/H: | 50' 1" / 10' 8" / 12' 4" |
| Int L/W/H: | 46' 4" / 9' 9" / 9' 10" |
| User Notes: | ex-SOU 79040 (Top Gon) |
