Abstract: In an air conditioner unit having a rotary-type door for changing air flow direction, a free end part of a rotary-type door support shaft is formed in a tubular shape. The free end part have an outside flat face on a part of the radially outside periphery and an inside flat face on a part of the radially inside periphery. A lever having an opening which corresponds to the outside peripheral shape of the free end part is fitted on the free end part in the case of manually driving the switching door. A rotary output shaft of an actuator having an outside flat face which corresponds to the inside peripheral shape of the free end part is fitted into the free end part in the case of automatically driving the switching door. The flat faces determine a fixing position of the lever or the actuator in a circumferential direction.