LiftMaster J 3/4 HP Industrial-Duty Jackshaft Operator spring-based system Door Sensor - 2

Door Sensor - 2

Wall mounting fasteners are not included

and reliable boom operation with the Magnetic Autocontrol Assembled VarioBoom Forcing Lever Kit

Double door magnetic locks require two sets of L & Z Brackets (one set per side)

Surface Housing

LiftMaster J 3/4 HP Industrial-Duty Jackshaft Operator spring-based system Door Sensor - 2LiftMaster J 3 4 HP Industrial Duty Jackshaft Operator The LiftMaster J operator is ideal for lighter rolling steel doors grilles and high or vertical lift sectional overhead doors in standard duty cycle commercial applications where a manual hoist is not required. Standard Duty up to 25 cycles hour and up to 90 cycles day (using continuous rated motor). Please note The following options are mandatory to purchase a Commercial Door Operator, any order