The RNK/XT top-mounted roller shutter system is designed to be built-in - once installed, the box is completely invisible from the outside. The RNK/XT system is available in two different heights: 165 mm and 185 mm. All boxes can also be fitted with a rolling mosquito net after installation. The system allows the use of MINI shutter slats and has insulated sides. It is compatible with various profile systems from aluplast or other manufacturers of PVC, aluminium and timber window systems with a frame depth up to 90 mm.