With the AT 550 SK/PA system, the frame and sashes are multi-chamber profiles connected with corner brackets. With the opening mechanism (shear), in addition to being a parallel top-hung outward window it can also be turned into a top-hung outward projecting window, and offers easy installation as a facade insert element. So these window systems can be used in any mulltion and transom constructions of our system house to ensure an elegant and harmonious look.
Frame 114 mm, sash 100 mm
as per EN 12207: Class 4
as per EN ISO 10077-2: Uf = up to 3.5 W / (m² K)
28 to 40 mm
Driving rain resistance
as per EN 12208: up to class E 1350