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Chamberlain 8 Ft. Garage Door Chain Drive Rail Extension Kit

Chamberlain

SKU: 43840172

The 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.

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