Liftmaster 3240
           1/2 HP Screw Drive Garage Door Opener
LM 3240


1/2 HP Screw Drive Garage Door Opener

The 3240 1/2 HP Screw Drive Garage Door Opener is smooth-running, even in the most extreme temperatures, and is the perfect choice if you want the latest advancements in smooth-running performance with a completely maintenance-free drive system. Our engineers replaced the two-piece plastic liner and aluminum rail system with a stronger, simpler one-piece galvanized steel rail, resulting in reduced friction and eliminating binding and the need for lubrication. And the 1/2 HP motor is equipped with our patented Motor Vibration Isolation System (MVIS®) to reduce noise and provide smooth operation year after year.

  • +The Smart Garage Door Opener® lets you electronically program security codes from the Multi-Function
  • +Delivers 200 watts of light with adjustable light time delay
  • +Meets all UL325 requirements


  • +The Protector System® safety sensors project an invisible light beam across the garage door opening and automatically reverse the door if anything interrupts the beam while the door is going down
  • +Sensing technology will stop the door from closing if contact is made with a person or object
  • +Opener light turns on automatically when The Protector System's infared beam is broken
  • +Patented technology detects when a door spring breaks and triggers the motor to reverse the door to the full open position
  • +Security+® rolling code technology assures a new code is sent every time the remote control is used
  • +Patented PosiLock® system ensures the door remains securely locked when the garage door is closed
  • +Manual release handle in case of power failure