ALU decorative panel is covering the hole sash, from the outside and from the inside. Final result is on both sides simple jet elegant surface.
Insulation of the decorative panels is made from the XPS. Decorative panels for installation in the both side hidden sash can be thick from 55 mm up to 130 mm. Two, three or four layered glass, also with LOW-e on one or both sides filled with 90% argon. The sheets of these decorative panels are both sides 3 mm thick, inside covered with the 5 mm thick dilatation rubber.
Decorative panels for the both side hidden sash are cut on the specific measure needed for installation in the sash. Drilling holes for the cylinder, door knob and handle are an integral part of the production. All drillings are made before the powder coating so all openings on panel would be powder coated.