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The Model 3950 Door Operator is designed for use on commercial rolling sheet door applications only. Maximum recommended duty cycle: 10 cycles per hour.

All LiftMaster Openers and Operators should be purchased through a Dealer and professionally installed.


  • 115 volt 1 Ɵ.
  • Control the Open/Stop/Close sequencing needs for your door operation with a single button control (SBC).
  • Improve durability with the NEMA 1 type electrical box construction with a powdercoat finish.
  • Enable limit setting for ease of installation and adjustment to ensure accuracy even after a power failure..
  • Ensure peace of mind with a lifetime motor warranty
  • Compliant with all UL 325 requirements.
  • Accept up to 20 remote controls and unlimited DIP switch remote control with our Security+® radio technology.
  • Provide easy, emergency manual operation using a readily accessible disconnect.
  • Protector System Safety Sensors


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