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This is a Screw Drive Rail Installation kit. This kit is for use on screw drive rail assemblies and includes; (1) sprocket coupling and installation screws. Compatible with LiftMaster® Models 3130 & 3240 Screw Drive Garage Door Openers. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
Genuine LiftMaster® replacement part.
Also known as: 041A6353