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J Jackshaft Garage Door Opener

J-Jackshaft Garage Door Opener

Jackshaft Garage Door Opener

The Liftmaster Model J is a rock solid heavy-duty jackshaft garage door operator. This is our most popular opener used in warehouses and factories because it can be used many times per hour and stand up to the pressure. The Model J is available in 1/2, 3/4 and 1 hp configurations. The Model J is also usable with single and three phase power.



  • Dual Voltage Connections
  • Available inĀ  1 Phase 115V and 230V, 3-Phase: 208V, 230V and 460V, 575V
  • Adjustable Friction Clutch
  • Brake Standard on 3/4HP and 1 HP Models
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Robert Broome Owner of Garage Doors & More

Robert Broome