Commercial Door Openers

Garage Door Specialists stands behind all Liftmaster® Commercial Openers. We stand by the best brands and install only products that have been tried and prove to be reliable. Head over to their website to learn about the many different models available for all commercial applications. 

If you have any questions:

Call our office at 920-885-6005

Liftmaster® Heavy Duty

Model T

Trolley Operator

Model T – Trolley Operator

T-style trolley commercial door operators are optimal for general industrial applications. Suspended from the ceiling, the Heavy-Duty operators are used on sectional overhead doors with standard lift. T operators are directly attached to drive and control the door.


  • MyQ® Technology enables you to securely monitor and control your facility operator and lights with your smartphone, tablet or computer for greater peace of mind.
  • Alerts can be received as email or pop-up (push) notifications on a mobile  device, ensuring the status of your commercial door.
  • MyQ Mobile App is a free download with no annual activation fee.

Safety and Security

  • Security+ 2.0 safeguards your facility – with every click, a new code is sent to the commercial door operator so the door opens only for you.

Liftmaster® Mid-Duty

Model MT

Trolley Operator

Model MT – Trolley Operator

The model MT is an innovative design of Medium-Duty Logic that provides reliable service and exceptional value to meet the needs of a variety of commercial door applications.


  • Used for standard-lift sectional doors
  • Medium-Duty Logic programmable integrated circuit board
  • High Starting torque motor with overload protection.
  • Quiet-gliding rail spacers
  • Quick-mount swivel header bracket
  • Built-in 315 MHz receiver

Liftmaster® Light Duty

Model ATS

Trolley Operator

Model ATS – Residential/Commercial Operator

The ATS (Advanced Trolley System) Door Operator is designed for use on residential or light-duty commercial door applications with standard lift. For doors up to 14′ high. Maximum recommended duty cycle: 8 cycles per hour.


  • Security+® anti-burglary coding radio receiver, standard
  • Automatic safety reverse/automatic door stop
  • Maximum run timer
  • Heavy-Duty “I-Beam” configured trolley track.
  • Auto-reconnect trolley
  • Meets current requirements for both commercial and residential door operators.

Need Commercial Help?

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