20' HC Container Open Side Shipping Container. The height of the container is about 30 cm higher than the standard 20′ Open Side Container. Outer Dimensions of the HC Container: Length: 6058 mm, Width: 2438 mm, Height: 2896 mm. Inner dimensions of the HC Container: Length: 5898 mm, Width: 2288 mm, Height: 2607 mm and Capacity is 35 m3.