LiftMaster 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 Control Panel or the powerhead
• Delivers 200 watts of light with adjustable light time delay
• Meets all UL325 requirements
  SAFETY & SECURITY FEATURES:
• 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

LiftMaster 3280
1/2 HP Belt Drive Garage Door Opener

Quiet and smooth, yet as tough as a steel-belted tire, the 3280 1/2 HP Belt Drive Garage Door Opener is the perfect choice if you want both quiet and smooth-running reliability, or simply have rooms positioned above your garage. The 1/2 HP heavy-duty motor is equipped with our patented Motor Vibration Isolation System (MVIS®) that eliminates powerhead vibration for reduced noise. It also features a solid-steel T-rail with automatic belt tensioner on the trolley, and an enhanced belt drive system for a more secure belt grip.

• The Smart Garage Door Opener® lets you electronically program security codes from the Multi-Function Control Panel or the powerhead
• Delivers 200 watts of light with adjustable light time delay
• Meets all UL325 requirements
  SAFETY & SECURITY FEATURES:
• 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

LiftMaster 3585
3/4 HP Belt Drive Garage Door Opener

No more sacrificing strength for less noise when it comes to garage door openers. The LiftMaster 3585 3/4 HP Belt Drive Garage Door Opener is the ultimate blend of quiet and power. With 50% more power it can lift even the heaviest garage doors effortlessly and with precision, and our patented Motor Vibration Isolation System (MVIS®) and steel-reinforced belts deliver smooth-running super-quiet operation.

• High-efficiency motor delivers improved performance in extreme weather conditions
• The Smart Garage Door Opener® lets you electronically program security codes from the Multi-Function Control Panel or the powerhead
• Enclosed gear case provides continuous lubrication and protection for longer life and smoother operation
• A 6-foot power cord makes connecting to a power source easier than ever
• Delivers 200 watts of light with adjustable light time delay
• Meets all UL325 requirements
  SAFETY & SECURITY FEATURES:
• 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

LiftMaster 3800
DC Motor Residential Jackshaft Opener

Today's garages go far beyond a place to merely park your car. So no matter if you want the extra storage space up above, have an oversized garage door, or even a cathedral ceiling, the LiftMaster® model 3800 Residential Jackshaft Opener is perfectly engineered solution to fit your specific garage door opener requirements. It mounts easily on the wall beside the garage door, and comes with a remote 200-watt light that can be positioned anywhere in the garage. The optional EverCharge® Standby Power System - that continues to operate your opener even when the power goes out - makes it even more convenient.

• Powerful 24V DC motor provides ultra-quiet operation, along with variable speed smooth start and smooth stop
• Easy wall-mount installation means no rails to hang
• Auto-force feature constantly monitors garage door system and adjusts forces to temperature fluctuations, floor height, and door track movement
• The Smart Garage Door Opener® lets you electronically program security codes from the Multi-Function Control Panel or the powerhead
• Enclosed gear case provides continuous lubrication and protection for longer life and smoother operation
• A 6-foot power cord makes connecting to a power source easier than ever
• New optional Alternate Power Source (580LM) is a safe, permanent option to power the 3800 when an outlet is not within 6 feet; UL approved
• Delivers 200 watts of light with adjustable light time delay
• Meets all UL325 requirements
  SAFETY & SECURITY FEATURES:
• 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

LiftMaster 3850
DC Motor Belt Drive with Integrated EverCharge Standby Power System

Now when the power goes out, your garage door opener will still work. The LiftMaster® 3850 is the only 3/4 HPS* professionally installed opener with a fully-integrated standby power system. It will operate the garage door opener for 40 cycles within a 24-hour period, and recharges automatically when the power comes back on; an audible signal tells you when the power is out and the EverCharge® Standby Power System is in use. The safety and security features will continue to operate as well, ensuring your family is protected in a power failure. The opener also features smooth start and smooth stop to reduce the noise of the garage door as it opens and closes - perfect for homes with a room above the garage.

* horsepower strength with same lifting force specifications as 3/4 HP LiftMaster garage door openers

• Auto-force feature constantly monitors garage door system and adjusts forces to temperature fluctuations, floor height, and door track movement
• The Smart Garage Door Opener® lets you electronically program security codes from the Multi-Function Control Panel or the powerhead
• Enclosed gear case provides continuous lubrication and protection for longer life and smoother operation
• A 6-foot power cord makes connecting to a power source easier than ever
• Delivers 200 watts of light with adjustable light time delay
• Meets all UL325 requirements
  SAFETY & SECURITY FEATURES:
• 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

Spring Replacements
Broken garage door springs look like this:

New garage door springs replaced by San Diego Overhead Garage Doors look like this: