... , sound insulation, heat preservation 3. moisture-proof, cold-resistance filtrationThickness: 2mm-20mm, 1000mm(width) x 3000mm(length),Density: 300g/cm3-3000g/cm3 ... .Color : white, Thickness: 3mm-20mm, 1000mm(width) x 2000mm(length),Density: 500g/cm3-3000g/cm3 ...