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What Are the Types of Ocean Freight Containers?

There are multiple types of containers to handle a variety of specialty needs.
standard-ocean-container

The most common container—called a standard container— is a completely-enclosed unit with rigid walls, roof and floor. At least one end wall has an accessible door. Available sizes: 20’ x 8’ x 8’6”; 40’ x 8’ x 8’6”, and 40’ x 8’ x 9’6” (high cube).

Hard-top-ocean-container

A removable steel roof makes it easier for cranes to load heavy goods into the container. Available sizes: 20’ x 8’ x 8’6”; 40’ x 8’ x 8’6”, and 40’ x 8’ x 9’6” (high cube).

Flat-rack-ocean-container

Steel-framed container, with no sidewalls, a wood floor and fixed or collapsible end walls. Some end walls may even fold flush with the base. Available sizes — 20’ x 8’ x 8’6”; 40’ x 8’ x 8’6”, and 40’ x 8’ x 9’6” (high cube).

Platform-ocean-container

A container with a steel frame, wooden floor and no side or end walls. Available sizes: 20’ x 8’ x 8’6” and 40’ x 8’ x 8’6”.

Open-top-ocean-container

Standard container without a rigid roof. Includes a flexible, removable tarpaulin roof. Door header on the end wall(s) can be swung out. Available sizes: 20’ x 8’ x 8’6”; 40’ x 8’ x 8’6”, and 40’ x 8’ x 9’6” (high cube).

Refrigerated-ocean-contianer

Short for “refrigerated container.” Thermal, insulated units with compressors to either heat or cool the container’s cargo. Many include adjustable ventilation, for better internal airflow. Available sizes — 20’ x 8’ x 8’6”; 40’ x 8’ x 8’6”, and 40’ x 8’ x 9’6” (high cube).

Insulated-ocean-container

Similar to a reefer, with polyurethane foam on its walls to maximize insulation, but uses the vessel’s cooling or “clip-on” unit for temperature control. Available sizes — 20’ x 8’ x 8’6” and 40’ x 8’ x 8’6”.