MH5011 Garage Door Hoist Operator - for high or vertical lift sectional doors or small rolling doors and grilles. By LiftMaster LiftMaster MJ5011 Medium-Duty Logic Jackshaft Operator for high or vertical lift sectional doors or small rolling doors and grilles SL5855011G3 Durable Heavy-Duty Gear-Driven Slide Gate Operator by LiftMaster for applications such as gate communities and industrial locations.