F50 Curtain Wall Classic Facade View System (Cover) When we look at this view from the outside, the windows look inside a frame. The difference between these windows and silicone and cassette windows is that the aluminum profiles that come on the glass look like a lid (cover-frame-surface-cover). When a part of the building is open, the opening is done by special profiles so that it is not visible from the outside. Flat, round and oval (almond) caps will give your building a different look. The transom and millionth profiles, which are 2 mm and 1.4 mm thick and range in size from 35 mm to 195 mm, have resulted in a wide range of executable systems and optimal static states. Due to the excellent design of the profiles, all carrier systems can be used and executed both horizontally and vertically. Since all profiles and their connections can be used jointly in different systems, it has a great advantage in terms of product storage.