High capacity, factory balanced refrigeration system that maintains cabinet temperatures of -10(degree)F (-23.3(degree)C) to 38 F (3.3 C). Factory engineered, self-contained, capillary tube system using environmentally friendly R290 hydro carbon refrigerant that has zero (0) ozone depletion potential (ODP), & 0.02 global warming potential (GWP). Self-Cleaning RCU Technology eliminates the need for cleaning of condenser coil, reduces energy consumption and helps maintain the coldest temperature and freshest product. Exterior - non-peel or chip black powder coated cold rolled steel; durable and permanent. Interior - attractive, white aluminum interior liner with stainless steel floor. Self closing doors. Positive seal, torsion type closure system. Triple pane thermal insulated glass door assembly with extruded aluminum frame. LED interior lighting provides more even lighting throughout the cabinet. Safety shielded. Entire cabinet structure is foamed-in-place using a high density, polyurethane insulation that has zero ozone depletion potential (ODP) and zero global warming potential (GWP).