The double-roof hard top is made of galvanized steel, and the frame is made of aluminum. Our permanent patio gazebo is applicable all year round with its weatherproof, fade-proof, and rust-proof features. Drainage ditch design to guide rainwater and avoid snow accumulation. Double-tiered roof with metal net to circulate air and block leaves and mosquitoes. Galvanized iron pipe has strong anti-corrosion ability.