Zephyr PRW15C01CG 15 Inch Single Zone Undercounter. Presrv Single Zone Wine Cooler ˇ Single Zone Wine Cooler For the lover of fine wine and fine design. This Presrv 15 inch Single Zone Wine Cooler is as cool as it looks. Featuring Full-Extension Wood Racks, PreciseTemp temperature control for maintaining accurate temperatures, Active Cooling Technology to ensure even cooling, and a vibration dampening system to minimize wine disturbance. New enhancements include mood-setting LED light strips in three colors and four light levels and an updated kickplate with lock.