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Function: Motor drive sprocket for chain transmission
this 17-foot arm delivers both functionality and safety
Door Compatibility: 1-3/8 in to 2-1/4 in thick doors
The K77-37635 Sprocket & Chain Kit is a critical repair component for maintaining the performance of your LiftMaster CSW200 series operator
Durable Metal Construction – Made from high-quality metal for long-lasting durability
LiftMaster K77-37854 Operator Housing Cover for RSW12UL aom-sw300ac Function: Motor drive sprocket forOperator Housing Cover for LiftMaster RSW12U UL Swing Gate Systems The LiftMaster K77 37854 is a genuine replacement operator cover housing box designed to restore the protective enclosure of RSW12U and RSW12UL swing gate operators. Built to match original specifications, this OEM housing safeguards internal components from weather and debris while maintaining UL325 safety compliance. Ideal for replacing damaged or worn enclosures, the K77 37854
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