Square Rail Idler Pulley
K144C0056 is a Square Rail Idler Pulley Replacement Kit. For use with various LiftMaster® and Chamberlain® Chain Drive Garage Door Openers; utilizing a square rail assembly. Check the owner's manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
Also known as: 144C56, 144C0056, 062316, 114C56