Wine collectors and others who store or age delicate wines have special requirements that cannot be satisfied by standard refrigeration equipment. Unlike air conditioners or commercial refrigeration systems these units gently cool the air without removing the moisture so essential for maintaining the integrity of the corks and the wine itself. Only excess moisture is removed in order to maintain 50% to 75% relative humidity. These units are not intended to chill wines to a low serving temperature or to cool "service cabinets" which are opened or entered frequently. These systems are dependable, quiet, and range applications from 100 to 2000 cubic feet. 4 types of systems for wine cabinets and wine cellars. Made in USA - Southern CA, Allow 1-3 weeks for delivery.