... , Good light transmission, Wide service temperature, Good resistance of whether Twin-wall Polycarbonate Sheetthickness: 4mm,5mm,6mm,8mm,10mm etcDensity: 0 ... .1kg/m2,1.35kg/m2,1.55kg/m2Width: 2.1mLength:on the basis of customer's requirmentsMore than 10 years life ... bend, be processingCertificated by ISO9001:200010 years guarantee 10mm-40mm Twin-wall Clear Polycarbonate Sheet for Sunny Roofing