... features:1.light transmisson 2.thermal insulation 3.sound insulation 4.uv protection 5.easy install. polycarbonate sheet for buildingProducts ... fire retardant classification of POLYGAL project sun sheet is B1. 4, ImpactresistanceIts outstanding toughnes offers greater protection against breakage during transportation ... Thickness(mm)1.2mm,1.5mm,2.0mm,3.0mm,4.0mm,4.5mm 6.0mm,8.0mm,10.0mm,12.0mmLength ...