DDF-92 - is characterized by very round lines of profile and glass list, radius of the curve in this series is 12 mm (R-12), which has influance on the aesthetics and longer vitality of the lacquer.
Standard glass pane for this windows is triple glass pane 4/14/4/14/4 with the Argon gas, which gives U value equal 0,6 W/m2K. Using of this glass pane is possible by thickening of profile to 92 mm. Profile it self by its thickness is more energy-efficent and sound-proof than traditional one. Window's U value equals from 0,8 to 10 W/m2K. In the new profile are two seals made of TPE (thermoplastic elastomer).