True’s food prep units are designed with enduring quality that protects your long-term investment. Factory-engineered, self-contained, capillary tube system using environmentally friendly R290 hydrocarbon refrigerant that has zero (0) ozone depletion potential (ODP), & three (3) global warming potential (GWP). Energy-saving, environmentally friendly, exclusive forced-air refrigeration system holds 33°F to 41°F (.5°C to 5°C). All stainless steel front, top, and ends. Corrosion-resistant galvan-coated steel back.