LiftMaster 41B5424 Belt Pulley Bracket Garage Door Opener Chamberlain Craftsman by LiftMaster
- Compatible with LiftMaster garage door opener Estate Series belt drive models 2580, 2585, 3585, 2500, 3500, 2500B, 2500D (all models may not be listed).
- 8550 DC Battery Backup Belt Drive
- For use on LiftMaster Belt Drive Models 2500, 2580, 2280, 3280 and 3500D.
- For use on Chamberlain Belt Drive Models WD822K, WD922K and WD912K.
