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Select a screw drive garage door opener when you live in an area with extreme climates. LiftMaster screw drives are engineered to run smoothly and quietly in any temperature. Each model is equipped with a thermistor that adjusts force as it gets colder, and a no-lube drive system for less trapped dirt and debris to cause binding when it's warmer. It all adds up to superior performance, whatever the temperature. |
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| PREMIUM SERIES |
| 1/2 Horsepower |
| • Engineered for Extreme Environments |
| • Quiet and Smooth-Running Operation |
| • 200 Watts of Light |
| • Lifetime Motor Warranty |
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| ELITE SERIES |
| 3/4 Horsepower + Battery Backup |
| • EverCharge Standby Power System |
| • Plenty of Power for Heavy Doors |
| • Engineered for Extreme Environments |
| • Quiet and Smooth-Running Operation |
| • 200 Watts of Light |
| • Lifetime Motor Warranty |
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| CONTRACTOR SERIES |
| • Ideal for the Value-Minded Homeowner or Builder |
| • Call for Features and Models |
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| LiftMaster 3240 Product Sheet |
| LiftMaster 3840 Product Sheet |
| LiftMaster Accessories Product Sheet |
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MODEL
3240 |
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MODEL
3840 |
| Horsepower |
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1/2 HP |
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3/4 HP |
| Gear Case Enclosure |
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| Motor Vibration Isolation |
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| Line Cord Length |
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4 FT |
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6 FT |
| Light Lenses |
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2 |
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2 |
| Light Bulbs |
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2 |
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2 |
| Wattage |
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200 W |
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200 W |
| Wall Control |
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M.FCT |
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SMART |
| Remote Control |
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3 BTN |
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3 BTN |
| Parts Warranty |
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1 YR |
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5 YR |
| Motor Warranty |
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LIFE |
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LIFE |
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| LIFTMASTER 377LM |
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LIFTMASTER 975LM |
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LIFTMASTER 915LM |
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| • Super-Smooth Quiet Operation |
| • 10-Ball Nylon Zinc Plated |
| • with purchase of LiftMaster Opener |
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| • Protect Photo-Eye Sensors |
| • Prevent Sensor Misalignment |
| • with purchase of LiftMaster Opener |
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