... felt density: 12, 16,20,24,32,40,48 Thickness: 20-160mm Length: 11000mm, 20000mm Width: 1200mm sound absorbing Glass wool felt ... -1200mm End use: rooms of building , refrigeration Equipment ,sound reduction system ,damping and sound absorption and noise reduction of domestic electric appliance ... room , inner wall of computer lab , isolated room flat top . sound absorbing Glass wool felt