A refrigerator includes a liner and a wall covering assembly to create a false wall within a refrigerator cabinet. The wall covering assembly includes a top wall spaced-apart from a top wall of the liner, and a rear wall spaced-apart from a rear wall of the liner. The rear wall of the wall covering assembly includes a ventilated portion for providing outwardly directed air to the refrigerator cabinet. A duct assembly is disposed between the wall covering assembly and the liner and is configured to deliver air through the ventilated portion of the wall covering assembly and also deliver air in the form of a downwardly directed air curtain at the front portion of the refrigerator cabinet. The air curtain disrupts the outward flow of air from the ventilated portion of the wall covering assembly at the front portion of the refrigerator cabinet.