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Home > Parts > 4178B0034B



4178B0034B is a Straight Door Arm Replacement Kit. For use with various LiftMaster® and Chamberlain® Garage Door Openers. The straight arm is commonly paired with the curved door arm; in connection to the garage door opener trolley. Check the owner's manual or replacement parts diagram for specific part information before ordering to ensure compatibility.

Refer to the following part # for the Curved Door Arm Replacement Kit: 041B0035B

Also known as: 012385041783, 178B33, 178B34
CAD $14.24


The 4178B0034B is compatible with the following:

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