With its narrow frame width and different designs, the classic uPVC lift-and-slide door can be easily combined with all uPVC window systems. Opal is also available with resistant aluminium outside. Officially tested for wind, driving rain and air permeability, the lift-and-slide door produced some outstanding results.
- Best value heat insulation
- 0.85 W/m²K (at 3800x2600mm and Ug 0.5 W/m²K)