... Zinc-Galvanized Surface Treatment, Non-rust & Beautiful Outlook.. All garage door hardware are made of thicker steel plate.The surface treatment ... is Zinc-Galvanized Process, Non-rust. Garage Door Hinges include 1#, 2#, 3#, 4#, 5# Hinges and Finger-protection type hinges ... . 14Ga, 18Ga, 26Ga.Various Type garage door brackets are more convenient ...