The Maxi-Stack® IV car is the mainstay of the United States domestic double-stack car fleet because it provides the optimum balance between tare weight and capacity. It is a three-unit, articulated double-stack car that can handle containers from 20’ to 53’ long in the well and containers from 40’ to 57’ in the top position.
Dimensions
| Length, Inside | 53′-2″ |
| Length, Over Couplers | 203′-9.75″ |
| Width, Inside | 9′-10.5″ |
| Width, Extreme | 9′-10.5625″ |
| Clearance | AAR Plate H |
Weight/Capacity
| Light Weight | 129,500 lbs |
| Load Limit/Capacity | 118,500 lbs per well |
| Gross Rail Load | 485,000 lbs |
Curve Negotiability Radius
| Uncoupled | 180′ horizontal |
| Coupled to Base Car | 302′ |
| Coupled to Like Car | 306′ |
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