Construction site in Krotoszyn. The investor decided to warmly install the window joinery where elements of the frame system were used. The system was adapted to the needs of the investor by the assembly team. The unusual set consists of a double thermo-BEAM and a thermo-FRAME. One of the thermo-BEAMs with a depth of 24cm, the other with a depth of 20cm. The warm window sill will be installed during the installation of the windows.