Genie 39027R Extension Kit, For: Model 2033, 2035, 2036, 3035, 7035 Garage Door Openers

The tube rail chain extension kit is to be used in conjunction with the 5 piece rail system for the Chain Drive 550, when the door measures 8 ft in height. The extension kit rail replaces the end section of the 5 piece tube rail system. Installation is easy with no additional assembly hardware. Extension kit cannot be used on the Chain Drive 500.