Flat Roof Windows illuminate the interior of buildings with natural light; allow airing of the room and provide excellent thermal insulation properties. The window can be specified with the highly energy efficient glazing unit U6 (Ug = 0.5 W/m2K) or U8 (Ug = 0.3 W/m2K), which enhances the energy performance of the whole building. As standard, the window is equipped with a safety glazing unit with internal anti-burglary P2A glass. All flat roof windows are available in electrical, manual and non-opening versions and are compatible with the heat protection awning blind and Fakro internal accessories. The wide range of flat roof windows also includes a version without a dome. The high energy-efficiency and the possibility to manufacture non-standard sizes are important advantages of this system. The window can be made in non-standard sizes to match the specific size of the opening or adapted to the sizes of old skylights due for replacement. Installation range: 0-15°. The flat roof window can be also mounted on an additional base with a height of 15cm, which raises the window and allows its installation, e.g. in green or living roofs.