- profile with a construction depth of 92 mm,
- glazing units 24-58 mm,
- 4-layer paint coating,
- 3 gaskets,
- 4 layers of glued wood,
- 4 types of wood: pine, spruce, meranti and oak.
The above value Uw is given for a reference window with the dimensions of 1230 mm x 1480 mm.