... ,Anti-corrosion,Self-clean by rainwater Product featuresWind resistance,Impact resistance,Anti-aging,Anti-corrosion,Self-clean by rainwaterBended ... and anti-aging,mute function, flame retardant, corrosion resistance, impact resistance.3.resistance to the typhoon at class12, usage for ... to confirm the location for screws,then drill holes with the electric impact drill.2.Fix the left and right brackets ...