Gearhead (GH) style commercial door operators employ lubricated gears for heavy industrial, high-cycle applications. GH-style operators include a floor-level chain hoist to ease manual operation in an emergency or power outage.
H-style operators include a floor-level chain hoist to ease manual operation in an emergency or power outage. The operators are typically mounted to the wall when used with large sectional overhead doors with vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles. H operators are attached to the door jackshaft to indirectly drive the door.
APT- style operators employ an auto-reconnect trolley with nylon inserts and a resilient-mount motor for quiet operation. Suspended from the ceiling, the operators are used on sectional overhead doors with a standard lift. APT operators are directly attached to drive and control the door.
Model MT is a medium-duty trolley operator for standard lift sectional doors. It features a high-starting torque motor, a compact design, quickest-gliding rail spacers and a quick-mount swivel header bracket.