WARMTH IS SOMETHING YOU FEEL. AND HERE YOU CAN SEE IT, TOO.
Better thermal protection
The central seal, which is heat-sealed around the circumference, sophisticated thermal insulation inside the profiles, and extremely precise fits ensure levels of thermal insulation previously unknown for aluminium windows. SwissStar supplies this thermal insulation with three different categories of the AL3 window: Basic, Medium, Premium. The Premium insulation achieves U-factors of 0.698 W/m2K– far lower than required for Passive House standard.