Ceiling Unit Cooler System Cutaway by DAC Worldwide (373-991) is a professionally-crafted, sectioned example of a refrigeration system fragment, including ceiling unit cooler with associated components, as used in commercial refrigeration systems relating to food preservation applications. Commonly encountered in cold rooms, freezers, walk-in coolers, reach-in units and other food preservation applications, these space-saving modular units allow for fine tuning of the cooling needs for fresh and frozen foods.