Chamberlain WD962KD Premium Whisper Drive 3/4-Horsepower Garage Door Opener with Standby Power

Works even when power goes out operates the garage door opener for 20 cycles within a 24-hour period safety & security continues to operate during power failure features smooth start & smooth stop 3/4 hps(r) dc belt drive system belt is reinforced with flexible steel cords auto force-sensing technology adjusts forces to temperature fluctuations floor height & door track movement enclosed gear case provides continuous lubrication & protection for longer life & smoother operation 60 second quick-install rail system3/4 HP DC belt drive system for the ultimate in quiet performanceBelt is built like a steel-belted tire, reinforced with flexible steel cordsEveryCharge Standby Power System ensures operation even when your power failsIncludes quick install railThis item is not for sale in Catalina Island.