Flat rack containers are constructed out of a wooden container floor and two fixed or flexible ends. They have neither side walls nor a roof. There are two types of flat rack containers: fixed end and collapsible flat rack containers. 40 foot flat rack containers can be loaded up to 35 tons. Flats, also called flat racks or open-top open-side containers, are mainly used for transporting particularly heavy or wide loads.
The flat rack containers have the following specifications: