1.Waterproof,fireproof,UV resistant 2.Aluminium and PVC Structure 3.Clear span:3-40m Characteristics1) High quality aluminum alliy frame,srtong and durable ... to DIN4101B1(grade:B1);Windproof(allow wind speed80km/h);UV resistant.3) Easy to install and uninstall, is the best choice ... available.2) Waterproof, flame retardant to DIN4102 B1, M2, UV resistant.3) 750g m2/850g/m2 PVC for roof cover,660g ...