20 ft High Cube Shipping Container Double Sided Door. The 20-foot-high double side door container is made of corten steel. The floor is made of hardwood. The 20 ft-top side double door container has an unladen weight of 3,900 kg and has a maximum payload of 26.580 kg. This is a total gross weight of 30.480 kg. The 20-foot high double side door container has the following measurements on the outside: 6.058 x 2.438 x 2.896 (length x width x width x in mm) and inside: 5.898 x 2.224 x 2.607 (length x width x height in mm). The door opening in the small side measures 2.114 x 2.494 mm (width x height). The opening of the side door is 5.702 x 2.494 mm (width x height). The volume of the container is 34.20 m3.