LiftMaster DHJ Door Lock Hoist/Jackshaft Operator

For shopping malls and cafeterias. Includes floor-level chain hoist for larger, heavier doors/grilles.
Rated duty cycle: 25 per hour; Up to 90 cycles per day.
Internal door lock sensor prevents damage by restricting door activation while door is locked.
Wall or hood mounts for rolling doors/grilles and sectional overhead doors with vertical high lift.