Warm doors - 40 or 60mm panels
The BERTRAND sectional doors are made of 40 mm thick panels filled with polyurethane foam, and they are sealed around the perimeter and between the sections. The shape of the upper arch has been designed to optimally press the upper door panel against the lintel. Due to this solution, the doors feature one of the best thermal insulation properties on the market: U= 1,12 [W/m2K
For the energy-efficient houses, we have a special offer: the VENTE K2 RFS 60
doors with the thickness increased to 60 mm. This exceptionally warm door also features the double bottom panel seal, intersection seals, and the additional perimeter gasket, which eliminates the thermal bridges between the wall
and the angle bars. All of the above allows to achieve the coefficient of U=0,9 [W/m2K