Stainless Steel Fiberglass Canopy for Balcony Fans (B900) Frame Material : Aluminum Alloy. Control : Manual Control. Sail Material : Polycarbonate Sheet. Sail Finishing : Polycarbonate Sheet. Metal Type : Aluminum. Frame : Aluminum Alloy. Snow Resistance : 20cm. Effect of Anti-UV : 98%. Portuguese Material : Polycarbonate Sheet. Wind Resistance : 42m/S. Frame Finishing : Powder Coated. Downcomer : ABS Engineering Plastics.