LiftMaster Liftmaster garage door opener complete trolley (carriage) assembly. Compatible with chain drive operators made by Liftmaster, Chamberlain, Sears, Craftsman, Wayne-Dalton and Master Mechanic. For Liftmaster Chain Drive garage door openers from 1984 to present. Genuine Liftmaster replacement part.
Brand: Chamberlain, Model: 041A3489