To lay such

Warm double -glazed window may have an option "Warm edge". Using a distance frame with a low level of thermal conductivity, the temperature rises in the edge of the double -glazed window. The frame is a thin steel foil, inside which is a layer of polypropylene and absorbent. To lay such a frame into an existing window, you need to disassemble the double -glazed window, insert the structure into it, connect and fill it with inert gas again.