Spotting a high cube on paper and steel
Bookings and tracking records rarely spell out high cube. Look for shorthand such as 40HC or 40HQ, or an ISO 6346 size-type code whose second character is 5, which marks a 9 ft 6 in height. A 40 ft high cube dry box usually shows as 45G1, and a high cube reefer as 45R1. On the box itself, containers taller than 8 ft 6 in must carry a yellow and black height mark on each side, near the top.
Cargo that gains from the extra foot
The extra foot adds volume, not floor space or much payload. A high cube suits cargo that runs out of space before weight, such as furniture, apparel, foam, plastics or tall machinery that just misses a standard box. Dense cargo gains little, since it reaches the weight limit first. Door openings are taller as well, which helps when loading tall items.
Clearance on the road and rail legs
A high cube on a standard chassis or trailer stands a foot taller than a standard box, which can matter on routes with low bridges, tunnels or strict vehicle height rules. In some countries, truckers use low-deck trailers or plan routes around clearances. Double-stack rail services generally take high cubes, but some older lines have tighter clearances. Check with the trucker or rail operator before routing a high cube to an unusual inland point.
Example
An importer of upholstered furniture books 40 ft high cubes because the cartons fill the space long before they reach the weight limit, and the booking lists the equipment as 40HC.
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Official sources
Questions
What does High Cube Container mean?
A high cube container is a container built 9 ft 6 in tall, one foot taller than the standard 8 ft 6 in box. It is most common as a 40 ft dry container and gives extra space for light, bulky cargo.
How much taller is a high cube than a standard container?
One foot. A high cube is 9 ft 6 in tall on the outside, while a standard container is 8 ft 6 in. Length and width match the standard box of the same size.
Does a high cube cost more to ship than a standard 40 ft?
Sometimes. Many carriers charge the same ocean rate for both, while others price high cubes separately. Ask for the rate by equipment type, and check inland routes for height restrictions.