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207 wire size and a 1 3/4 inch inside diameter
12B374‑2
Install Sprocket onto door shaft with key and set screws
This pair torsion springs come in a white finish with a 0
Designed for efficiency
Opener Square Rail Trolley Kit SHOP BY SPRING SIZE_.218-2-27 207 wire size and a41C5141 1 is a Square Rail Trolley Replacement Kit. For use with various LiftMaster and Chamberlain Chain Drive Garage Door Opener Rail Assemblies. The square rail trolley is used for travel on the garage door opener rail and connects the door arm to the chain drive mechanism. Check the owner's manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Also known as: 062313, 41C5141, 41C51411
