Hidden leaf hinged system compatible with any standard 16 channel fitting. It shows an attractive design based on hiding the leaf behind the frame, reducing the visible aluminum section to 73.8 mm. In this way, a glazed surface is achieved that can reach 85% of the total glass of the window, thus facilitating the entry of light into the interior of the rooms. Its avant-garde aesthetic is completed with the possibility of inserting a drain and hidden hinges
