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Use genuine Chamberlain rail extension kits if you need to add additional railing to your garage door tracks. Kits can extend rails to 8' or 10'.
Belt Drive Rail Extension Kit for 10’-High Garage Doors
Chain Drive Rail Extension Kit For 10'-High Garage Doors
Full Chain Extension Kit For 10'-High Garage Doors
MSRP
Belt Drive Rail Extension Kit For 8'-High Garage Doors
Full Chain Extension Kit For 8'-High Garage Doors
Chain Drive Rail Extension Kit For 8'-High Garage Doors