Aluprof MB-77 HS is a lift and slide door system ideal for those seeking a perfect combination of a house with a terrace or winter garden. The door construction is based on the widest available frame of 174 mm (2-rail system) or 271 mm (3-rail system) and 77 mm wide sliding sashes. This ensures incredible structural stability and user comfort. The sashes can reach a weight of up to 400 kg, height of up to 3.2 m and width of 3.3 m, which makes it possible to manufacture doors of significant dimensions. Thus the MB-77 HS doors fit perfectly into modern architectural trends, as the space we obtain is very spacious and additionally functional. An interesting solution is the possibility to make a corner development of the MB-77 HS door, where after sliding the door leaves open space in the corner without any posts. A huge advantage of the MB-77 HS system is its excellent thermal insulation. The system is designed so as to allow the use of very wide glazing packages, even up to 58 mm.