041C5141-1

Square Rail Trolley Kit

041C5141-1 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.