LiftMaster 3800 Residential Jackshaft Garage Door Opener
COMPATIBLE W/HORIZONTAL FRONT MOUNT TORSION SPRINGS ONLY!ONLY WORKS WITH TORSION SHAFT BAR***YOU MUST HAVE TORSION SPRINGS ON YOUR GARAGE DOOR WITH A TORSION SHAFT BAR FOR THE 3800 OPENER TO WORK. BEFORE PURCHASING, CONTACT SELLER OR CHAMBERLAIN TO MAKE SURE IT IS 100% COMPATIBLE WITH YOUR APPLICATION. SHIPPING TO Continental U.S. ONLY! ALL OTHER ORDERS WILL BE CANCELED, Thank you  New in unopened box. Fast shipping via UPS ground