... noise-abasement and heat insulation,anti-corrosion,insects against without artificial processing4.Delicate texture,with strong natural sanders5. ... ,all galvanized hingesDoor panel typeSteel or aluminum alloy frame.Embossing,frameless or framing,or with straightgrain ,diagonal.can be made into ... obstacle4.anti-theft secutity5.emergency open with emergency unlock device aluminum alloy wood garage door