The 20ft duocon dry container, is also popularly known as a double-door container, tunnel container, or two-in-one container. It is created by joining the back of two 10ft containers. This container can be used as one container with double doors or as two 10ft containers after separation. Measuring L 20’ x W 8’ x H 8’6”, this container shares the exact external dimensions with a 20ft standard or general-purpose shipping container.
| External dimensions | L 20’ x W 8’ x H 8’6″ | L 6 m x W 2,4 m x H 2,6 m |
| Volume | 1.159 cu ft | 32.8 m³ |
| Tare weight | 6.065 lbs | 2.750 kgs |
| Max payload | 61.135 lbs | 27.730 kgs |
| Max cargo | 67.200 lbs | 30.480 kgs |