... insulated,anti-aging,anti-rust,sound insulation,corrosion-resistance;7.Environmentally friendly,Energy efficiency,Thermal insulation,good ventilation;8.UV protection---it ... :1.2mm,1.5mm,2.0mm,so on;10.Acoustical insulation:31dB;11.K-value of window:2.6w/m2.k ... ;12.Wind resistance:3700pa;13.Air permeability:1.3m3/h.m;14.Watertightness:350pa;15.Packing: Foam inside ...