... 1.light transmisson 2.thermal insulation 3.sound insulation 4.uv protection 5.easy install. polycarbonate sheet for buildingProducts ... retardant classification of POLYGAL project sun sheet is B1. 4, ImpactresistanceIts outstanding toughnes offers greater protection against breakage during ... 5mm,2.0mm,3.0mm,4.0mm,4.5mm 6.0mm,8.0mm,10.0mm,12.0mmLength(mm)Thickness≤4.5mm 30-50m/volume Thickness over 4.5mm ...