| Owner: | Union Pacific Railroad Company |
| Type: | Trailer |
| AAR Class: | : |
| AAR Type: | Z161 |
| Detail Info: | Trailers, Chassis (Refer to Second and Third Numeric under Chassis), 40 ft. and less than 45 ft. Straight, outside length, O.S. Height 4'6" and under at locking plane, Tandem Width 96" or under |
| Max Gross Weight: | 64800 |
| Load Limit: | 50000 |
| Ext L/W/H: | 40' 0" / 8' 0" / 4' 0" |
