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J Jackshaft Garage Door Opener

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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 in  1 Phase 115V and 230V, 3-Phase: 208V, 230V and 460V, 575V
  • Adjustable Friction Clutch
  • Brake Standard on 3/4HP and 1 HP Models

Liftmaster Specials
Liftmaster SpecialsClick here to see our specials

Linear Specials
Linear Specials                  Click here to see our specials

Our Unconditional Written Guarantee

At Garage Doors & More, we never ask you for a blank check when you call us. Our technicians will never install parts or complete a repair without your prior consent. If we make a repair and the issue reappears…we fix that issue – FREE.

Robert Broome
Owner, Garage Doors & More of the Piedmont

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