The Vinotemp wine cellar cooling system VINO-4500HZD is a self-contained, long-lasting, reliable and manufactured to the highest quality standards. Its four high speed fans allow great air efficiency and the oversized and bottom feeding evaporator is for proper humidity maintenance. This unit uses environment friendly R134a refrigerant, its adjustable temperature control sets 50-65 degrees F. It has digital control display and includes a removable grill for easy cleaning. The VINO-4500HZD covers 1000 cubic feet or approximately 4500 wine bottles.