The LiftMaster limit worm part 81B170-1. This is the genuine replacement made by LiftMaster. The 81B170-1 limit worm includes the limit worm.
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Compatible with LiftMaster 2110, 2220, 3110 and 3220 models
The LiftMaster limit worm part 81B170-1. This is the genuine replacement made by LiftMaster. The 81B170-1 limit worm includes the limit worm.
Compatible with LiftMaster 2110, 2220, 3110 and 3220 models