Photo 1 of 41B3869-1 & 41B3869-3 Complete Trolley Assembly Replacement for LiftMaster and Chamberlain Brand Garage Door Openers Models 1270 1280 1280R 2280 2580 2500, Replaces 041B3869-3A 41B3869 41B3869-3A

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Photo 1 of 41B3869-1 & 41B3869-3 Complete Trolley Assembly Replacement for LiftMaster and Chamberlain Brand Garage Door Openers Models 1270 1280 1280R 2280 2580 2500, Replaces 041B3869-3A 41B3869 41B3869-3APhoto 2 of 41B3869-1 & 41B3869-3 Complete Trolley Assembly Replacement for LiftMaster and Chamberlain Brand Garage Door Openers Models 1270 1280 1280R 2280 2580 2500, Replaces 041B3869-3A 41B3869 41B3869-3A