The Model MJ Door Operator is designed for use on industrial sectional doors with high or vertical lift and on small rolling doors and grilles. Maximum recommended duty cycle: 12 cycles per hour.
All LiftMaster Openers and Operators should be purchased through a Dealer and professionally installed.
Main Office: (814) 371-7358
Clearfield Office: (814) 762-8100
Punxsutawney Office: (814) 938-3332