COMMERCIAL OPERATOR: MODEL 3900
LiftMaster® Commercial Door Operators are engineered, manufactured and tested to provide reliable service to meet the toughest commercial applications.
- Heavy-duty 24V DC motor provides ultra-quiet operation, along with variable speed smooth start and stop.
- Rated up to 10 Cycles per Hour
- Push Button Limit Settings
- Compact Design
- Lifetime Motor Warranty
For use on light-duty commercial standard, vertical and high-lift sectional doors. Ideal for limited height, cathedral or obstructed ceiling installations
The Protector System® safety sensors reverse the door automatically if the infrared beam is broken, before contact is made.