Sloping, openable glazing (roof cut-outs) Vertically upward and/or downward slidable wings Curved plants Vertical elements, from bottom to top / from top to bottom In all these special designs, the ...

With the aid of the air seal, the system can accommodate more construction tolerances than conventional sealing systems. This in turn allows sash sizes up to a maximum width of 8 × 3.1 m (W × H) or a ...