Chamberlain 1.25 in. W X 49.47 in. L Steel Chain Drive Rail 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. For Chamberlain chain drive models in 8-ft. garage door applications. Rigorous quality testing ensures lasting performance Quick-installation of extension rails and replacement chain.