PE 68 DOORS PE 68 - three-chamber door system with thermal insulation Profile depth for frames and sash 68 mm Filling - various types of panels, glass, double-glazed units up to 51 mm thick Thermal gaskets with a width of 24 mm are used Thermal insulation: thermal conductivity (for frame) Uf = 1.5 - 2.1 W / m2K