LiftMaster Commercial Garage Door Openers
LiftMaster Type H
The Model H is an industrial-duty hoist door opener, as manufactured by The Chamberlain Group, Inc. and is for use on vertical or high lift sectional doors, rolling doors and grilles. It is rated for 25 cycles per hour during peak periods. Up to 80-90 cycles/day.

LiftMaster Type MH
The Model MH is a medium-duty hoist operator, as manufactured by The Chamberlain Group, Inc. and is for use on vertical or high lift sectional doors or small rolling doors and grilles. It is rated for 12 cycles per hour during peak periods up to 50 cycles/day.
LiftMaster Type T
The Model T is an industrial-duty trolley door opener, as manufactured by The Chamberlain Group, Inc. and is for use on standard lift sectional doors. It is rated for more than 12 cycles per hour during peak periods.
LiftMaster Type MT
The Model MT is a Medium-Duty Logic trolley door opener, as manufactured by The Chamberlain Group, Inc. and is for use on standard lift sectional doors. It is rated for 12 cycles per hour during peak periods.
LiftMaster Type J
The Model J is an industrial-duty jackshaft door opener, as manufactured by The Chamberlain Group, Inc. and is for use on vertical or high lift sectional doors, rolling doors and grilles. It is rated for 25 cycles per hour during peak periods. Up to 80-90 cycles/day.
LiftMaster Type MJ
The Model MJ is a medium-duty door opener, as manufactured by The Chamberlain Group, Inc. and is for use on vertical or high lift sectional doors or small rolling doors and grilles. It is rated for 12 cycles per hour during peak periods. Up to 50 cycles/day.