... ,40,48 Thickness: 20-160mm Length: 11000mm, 20000mm Width: 1200mm sound absorbing Glass wool felt Density: 12-48kg/m3width: 1200mmLength: 7000 ... -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