PREMIUM SERIES 3240
1/2 HP Screw Drive Garage Door Opener
This opener is smooth-running even in the most extreme temperatures. The two-piece plastic liner and aluminum rail system have been replaced with a stronger, simpler one-piece galvanized steel rail. This dramatically reduces friction and eliminates binding and the need for lubrication. The 1/2 HP motor is equipped with LiftMaster’s patented Motor Vibration Isolation System® (MVIS) to reduce noise and provide smooth operation.