Two doors white oak exterior unfinished. Redwood and aluminum individual racking. Universal 3 3/4 in. racking to fit most bottle sizes. Wine Mate self-contained cooling system (1500BTU). Digital temperature control. State of the art Wine Mate cooling system. Approx. bottle capacity: 160. Vinotemp Wine cabinets are all-in-one wine storage solutions hand-crafted with domestic woods in Southern California. They maintain an ideal environment for both short-term storage and long-term aging for all types of wines keeping the temperature at 55 degrees and level of humidity at 50-70% much like the cool caves used to store wine in France. Since everyone has their own unique preference for bottle types to store special attention is paid to customization: lights finish custom sizes glass design exhaust placement locks cornice or base to name some of the choices we offer. Tell us your dream and we will make it true. Usually units come with the insulation factor = R12. Added insulation is always an option. For varied temperature environments we recommend higher insulation 2500 Wine Mate cooling unit (normally Wine Mate 1500 is used) and non glass door units. It is important to note that most of the units are designed with back exhaust where you need a minimum of 4-6 inches on back 12 inches on sides and 6-12 inches above for proper ventilation.