WHISPERKOOL SC PRO 4000 Through-the-Wall Cooling UnitWhisperKOOL SC PRO 4000 Through the Wall Cooling Unit The SC PRO 4000 represents the pinnacle of self contained thermal management, engineered specifically for the technical demands of mid to large scale wine cellars. This through the wall cooling unit features an all new housing design informed by direct feedback from master installers, integrating high end components with a streamlined, single piece installation process. By combining high velocity