A galley comprising: a cart compartment having a chamber , the cart compartment being defined by a plurality of walls , the plurality of walls comprising a rear wall behind the cart compartment, side walls along sides of the cart compartment, a mid-wall above the cart compartment, and a bottom wall below the cart compartment; at least one door coupled to the cart compartment to enclose and allow access to the cart compartment; a supply duct configured to supply cooled airflow to the cart compartment, the supply duct having an air supply device at the cart compartment, the air supply device having an air-through supply vent configured to be in flow communication with an air-through galley cart when received in the cart compartment to supply the cooled airflow into an interior of the air-through galley cart, the air supply device having an air-over supply vent configured to be in flow communication with the chamber to supply the cooled airflow into the chamber for cooling an exterior of an air-over galley cart when received in the cart compartment and, wherein the air-over supply vent includes a valve movable between an open position and a closed position, the valve configured to be in the open position when the air-over galley cart is in the cart compartment , the valve configured to be in the closed position or a partially closed position when the air-through galley cart is in the cart compartment; a valve controller configured to open and close the valve based on the type of galley cart in the cart compartment ; and a return duct having an air return device configured to receive the airflow from the cart compartment. a cart compartment having a chamber , the cart compartment being defined by a plurality of walls , the plurality of walls comprising a rear wall behind the cart compartment, side walls along sides of the cart compartment, a mid-wall above the cart compartment, and a bottom wall below the cart compartment; at least one door coupled to the cart compartment to enclose and allow access to the cart compartment; a supply duct configured to supply cooled airflow to the cart compartment, the supply duct having an air supply device at the cart compartment, the air supply device having an air-through supply vent configured to be in flow communication with an air-through galley cart when received in the cart compartment to supply the cooled airflow into an interior of the air-through galley cart, the air supply device having an air-over supply vent configured to be in flow communication with the chamber to supply the cooled airflow into the chamber for cooling an exterior of an air-over galley cart when received in the cart compartment and, wherein the air-over supply vent includes a valve movable between an open position and a closed position, the valve configured to be in the open position when the air-over galley cart is in the cart compartment , the valve configured to be in the closed position or a partially closed position when the air-through galley cart is in the cart compartment; a valve controller configured to open and close the valve based on the type of galley cart in the cart compartment ; and a return duct having an air return device configured to receive the airflow from the cart compartment. <EOS>