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Liftmaster Garage Door Opener
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Light-Duty Commercial Jackshaft Operator for Sectional Doors Model 3900 is a light-duty jackshaft operator for light duty commercial sectional applications only. It features a compact design ideal for limited height cathedral or obstructed ceiling installations. It may be used on standard and high-lift (maximum 7 ft. high-lift) sectional doors measuring up to 14 ft. high and up to 18 ft. wide but not exceeding 180 sq. ft. or 650 lbs. STANDARD FEATURES Motor Heavy-duty 24VDC motor provides ultra-quiet operation along with variable speed smooth start and stop. Compact Design: Ideal for limited height cathedral or obstructed cling installations mounts on the left or right side of door and attaches to the torsion bar. Push Button Station 1-button station for OPEN & CLOSE functions with type B2 control wiring is standard for all operators. Controls with 1, 2 and 3 buttons are available. The Protector System Safety Sensors: A non-contact" photo safety sensor designed to sense an obstruction and signal the door operator to reverse to open. Warranty: Lifetime motor warranty. OPTIONAL ACCESSORIES Power Door Lock Prevents the door from being manually forced open once fully closed. Ever Charge Standby Power System: Operates the door operator for up to 20 full cycles within a 24 hour period. Alternate Mounting Kit: Allows operator to be mounted below the torsion bar. Remote Work Light Adds 200 watts of light with adjustable light time delay; unlimited number of lights can be added. Keyless Entry Allows door to open or close by using a code programmed directly into the unit.

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Chicago Garage Door Company

Garage Door Mart is a trusted BBB certified garage door company serving the Naperville, Aurora, Plainfield and all Chicago-land garage door needs for over 10 years. Our customers value our quality services and have submitted numerous feedback comments over the years that we proudly present on our site. Click to read testimonials and what our customers are saying about us.
"Door Mart came really fast just to lift the door up so that I could drive my husband to the airport so he wouldn't miss his flight. Ash came back later the same afternoon and he only charged us for one service." read more testimonials.
Contact us today to have your free estimate our sales representative will help you to find out the style you're looking for and to be installed by one of our certified technicians professionally.