Chamberlain 10 Ft. Garage Door Chain Drive Rail Extension Kit SpectraTile Together they help remove any

Together they help remove any built-up heat and moisture inside the attic for year-round ventilation

Cartridges snap-lock into position

Can be used on aluminum

textured handle for a secure grip

capping off at the ridge

Chamberlain 10 Ft. Garage Door Chain Drive Rail Extension Kit SpectraTile Together they help remove anyThe Chain Drive Rail Extension Kit is required for reliable, everyday operation of Chamberlain chain drive models. 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.