Clear Polycarbonate Sheet Light weight, Good light transmission, Wide service temperature, Good resistance of whether Twin-wall Polycarbonate Sheetthickness: 4mm,5mm,6mm,8mm,10mm ... etcDensity: 0.8kg/m2,1.0kg/m2,1.1kg/m2,1.35kg/m2,1.55kg/m2Width ... ISO9001:200010 years guarantee 10mm-40mm Twin-wall Clear Polycarbonate Sheet for Sunny Roofing