20', 40', high cube, 45' and reefers: size inside and out, door, volume and weight. Plus how much cargo fits on a US road.
US federal limit: 80,000 lb gross for tractor, chassis, container and cargo. Per axle group: 34,000 lb a tandem, steer axle usually 12,000 lb.
Heavier than that needs an overweight permit or a corridor your state allows. Check the rules where you haul.
Outside: 20 ft long, 8 ft wide, 8 ft 6 in high. Inside: about 19 ft 4 in × 7 ft 8 in × 7 ft 10 in, or about 1,172 cubic feet.
Outside: 40 ft × 8 ft × 8 ft 6 in. Inside: about 39 ft 6 in × 7 ft 8 in × 7 ft 10 in, or about 2,390 cubic feet.
A high cube is one foot taller: 9 ft 6 in outside and about 8 ft 10 in inside. That adds about 300 cubic feet.
The federal gross limit is 80,000 lb for tractor, chassis, container and cargo together, so the cargo limit depends on your tractor and chassis. Axle limits of 34,000 lb per tandem can lower it. Use the calculator on this page.
A chassis with three rear axles, used for heavy 20 ft containers. It spreads the weight to stay inside axle limits. The 80,000 lb gross limit still applies unless you have a permit.
The weight of the empty container. Max gross minus tare is the most cargo the container itself is rated for.
Pricing the move? Try the drayage rate calculator or see what drayage is.
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