An extruded fin pack assembly is provided which is positioned within an appliance cabinet. In the embodiments, the fin pack includes a plurality of fins which are mounted in a substantially vertical plane and create flowpaths for air flow currents therethrough. A cover is provided to attach to the fins and hide the fins from view when the cabinet of the refrigerator or freezer is open. The cover also increases efficiency of the flowpaths between the fins thereby increasing convection heat transfer and increasing removal of heat from within the cabinet.