Medium Duty

Whether you need a medium-duty garage door opener for a restaurant, warehouse or home supply shop, Crawford Door Sales has you covered. For decades, we've been proudly serving the Twin Cities and surrounding area with the industry's most reliable products and excellent customer service. From determining the overhead door that's right for your space to installation and repair services, our friendly team of experts is here to assist you every step of the way.

We offer a handpicked selection of medium-duty LiftMaster commercial operators that are durable, reliable, efficient and easy to operate. For more information on the LiftMaster commercial operators we sell, check out the sections below.

What Type of Door Requires a Medium-Duty Operator?

As opposed to light-duty and heavy-duty overhead door operators, medium-duty operators are typically used for overhead doors that are industrial sectional doors that feature vertical lifts or high lifts. They are also used on grilles and small rolling doors. 

Our selection of medium-duty LiftMaster commercial door operators is a fantastic option for commercial spaces in every industry. Talk to an expert to find out more about how and where to use our medium-duty door operators.

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Our LiftMaster Medium-Duty Commercial Operator Inventory

At Crawford Door Sales, we carry three types of LiftMaster medium-duty commercial operators.

1. MJ Medium-Duty Jackshaft Operator

This medium-duty operator's performance specifications include:

  • A maximum of 12 cycles per hour (recommended)
  • 115 volts
  • Operational with a three-push-button control
  • LiftMaster 2-year warranty
  • Limit-setting available
  • Can be operational during a power failure
  • Automatic door closing with an adjustable timer
  • Mountable, rail-free operator
  • NEMA Type 1 electrical box
  • Meets all UL 325 requirements
  • Emergency manual operation

2. MH Medium-Duty Hoist Operator

Product highlights for the LiftMaster MH Medium-Duty Hoist Operator include:

  • 115 volts
  • Programmable automatic door closing
  • Mountable on either side of the door; rail-free
  • Open, close and stop functions from one three-button controller
  • Features oil-filled heavy-duty bushings
  • Electromechanical limit system built in to ensure easy installation and adjustment
  • Alerts user when maintenance is required
  • NEMA Type 1 electrical box with powder-coated finish
  • Meets all UL 325 requirements
  • Emergency manual operation

3. MT Medium-Duty Trolley Operator for Standard Lift Sectional Doors

This LiftMaster product is designed specifically for operating standard lift sectional doors that are a maximum of 14 feet high. Other product details include:

  • Maximum of 12 cycles per hour (recommended)
  • 115 volts
  • NEMA Type 1 electrical box
  • LiftMaster 2-year warranty
  • Regular maintenance alerts
  • Automatic door closing options with adjustable time increments
  • Features oil-filled heavy-duty brushings
  • Limit setting options available for installation and adjustments
  • Compliant with every UL 325 standard
  • Adjustable Friction Clutch included for damage prevention
  • Emergency manual operation

Order Your Medium-Duty LiftMaster Operator From Crawford Door Sales

If you're interested in one of our medium-duty LiftMaster door operators or have any questions about our products, contact us for a free estimate today. We'll even send someone to your location to assess the dimensions of your doorway and help you determine the best option for your commercial space.

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