Metcalfe OO/HO Nissen Hut Card Kit Designed back in 1916 during WW1, the Nissen Hut came into it.39;s own during WW2 as a quick build, multi use hut. They were then used after WW2 as temporary housing for displaced families. Many since got converted to workshops and agriculture use. This cut card kit comes with an option of either a single door or a double .39;workshop.39; door. The side windows (included) are also optional. 72mm x 104mm. This item is intended for modelling use and is not a toy. Actual product may vary slightly from the pictures shown.