| Code |
Box description (along with validation rules) |
| 4 |
Standard roof
hatch |
| 7 |
Rectangular or
square roof hatches |
| 9 |
Rectangular or square hatch
offset from center line of car |
| Code |
Gondola description |
| 1 |
Trough
hatch in roof |
| 2 |
Removable
roof |
| 4 |
Standard
roof hatch |
| 5 |
Other types of roof
openings |
| 9 |
Rectangular or square
roof hatch offset from center line of car |
| Code |
Hopper description |
| 1 |
Trough hatch in
roof |
| 2 |
Removable
roof |
| 3 |
Self-storing
roof |
| 4 |
Standard roof
hatch |
| 5 |
Other types of
roof openings |
| 6 |
Combination (through &
round or square) hatches |
| 7 |
Rectangular or
square roof hatches |
| 8 |
Round hatch offset
from center line of car |
| 9 |
Rectangular or square hatch
offset from center line of car |
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