Summit 30" 20.4 Cu. Ft. Capacity Refrigerator-Freezer White DesignFEATURES NIST calibrated thermometers Two thermometers provide an external readout of the current and high low refrigerator and freezer temperature to the nearest tenth of a degree High low temperature alarms Both thermometers include an audible alarm that can be set by the user Frost free operation No frost convenience requires no manual defrosting Adjustable glass shelves Rearrange refrigerator space to accommodate all sizes or remove shelves for