Glass Wool CE certificate Grade A1 fireproof Sound absorption , heat insulation Density: ... , 16, 18, 20, 24 kg/m3 10-48kg/m3 48-80 kg/m3 Thickness: 10, 15, 20, 30, 40, 50, 60 ... .Antisepsis, ageing resistance, and anticorrosion, ensuring a healthy environment. Glass Wool