Construction on which the investor used Thermo-FRAME, i.e. the so-called warm assembly. The entire frame system was assembled with the windows in the window assembly company. Ready sets were delivered to the construction site where they were installed. Elements of the Frame System are Thermo-FRAME, a warm window sill, i.e. Termo-WINDOW SILL, Termo-BEAM with an additional thermo-FRAME above the thermo-BEAM.