Glazed Windows on

Double -Glazed Windows Are Single -Chamber and Multi -Chamber. In a Single -Chamber Double -Glazed Window, There are 2 Glasses Between Which There is a Distance Frame 12 -16 Mm Thick. Reducing Heat Loss in Such Double-Glazed Windows on Average 30-40%, Decrease in the LEVEL of 30-35 DB, 18%Light LELEL.