LiftMaster MJ5011 Medium-Duty Logic Jackshaft Operator for high or vertical lift sectional doors or small rolling doors and grilles BG790 barrier arm gate operator - for heavy-duty industrial applications by LiftMaster MH5011 Hoist Garage Door Opener by LiftMaster For Rolling Doors - Grilles - Industrial Sectional Doors with High or Vertical Lift, Left Hand LiftMaster Hoist Operator