The three chamber system for doors with thermal insulation. The system has a coplanar structure profiles (notch clearance 18 mm) and possibility of applying glazing beads for the “euro” standard groove. Profiled thermal breaks of width of 34 mm are applied in PE78N. Specially designed compatible profiles enable the ease of connection between door and windows. The structural depth for frames and sashes equals 78 mm.

Thermal insulation 
Frame heat transfer coefficient U_f= 1,5 W/m²K.