The NK2-280 Double is a 2-ply fold-up door. Due to its rigid 280 mm wide frame construction, it is particularly suitable as a large exterior door, e.g. in dockyards and aircraft hangars The width of a single door can be up to 28 m, and the height 25 m. When using an elevating support post system with multiple doors, the door width is unlimited. The door fabric always comes UV-coated, and it is possible to add burglary prevention mechanisms to it, as well. Windows are also available for this door; or the entire fabric can be partially translucent. A touch screen control panel is one of the accessories available for this door.