Chamberlain 10' Chain Drive Garage Door Opener Extension Kit

The Chain Drive Rail Extension Kit for 10'-High Garage Doors is required for reliable, everyday operation of Chamberlain chain drive models in 10-ft. garage door applications. Featuring a quick-install extension rail and replacement chain, the kit includes everything needed for quick and easy installation. Includes one-year warranty, rail extension, replacement chain, all necessary hardware and an instruction manual for easy setup.