Panels for doors made of aluminium, 36-mm thick (or 77 mm for the MB-86SI system flushed on both sides) are original solutions of Drutex. They consist of two layers of 2.5-mm aluminium sheets on both sides of the door. The inside is XPS foam. This innovative solution determines the great energy efficiency and strength parameters of Drutex doors. The 28-mm thick glass panes (or 70 mm for the MB-86SI system flushed on both sides) used in these solutions are exclusively our own production. In the MB-86SI system, it is possible to flush the panels with the door sash on the outside and on both sides.