| Owner: | Union Pacific Railroad Company |
| Type: | Chassis |
| AAR Class: | : |
| AAR Type: | Z131 |
| Detail Info: | Trailers, Chassis (Refer to Second and Third Numeric under Chassis), 48 ft. and over Straight, outside length, O.S. Height 4'6" and under at locking plane, Tandem Width 96" or under |
| Max Gross Weight: | 74400 |
| Load Limit: | 67200 |
| Ext L/W/H: | 53' 0" / 8' 0" / 4' 0" |
| User Notes: | 53' |
