Designed using the highest quality materials and components to provide the user with colder product temperatures, lower utility costs and exceptional food safety. 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). High capacity, factory balanced, refrigeration system holds 33°F to 38°F (.5°C to 3.3°C) for best food preservation in extreme conditions. Stainless steel exterior and interior. Equipped with one (1) factory installed interior kit option. Four (4) different interior kits available (see Kit Options). Positive seal self-closing doors with 120° stay open feature. Lifetime guaranteed door hinges. Lifetime guaranteed heavy duty all metal working door handles. Entire cabinet structure and solid door are foamed-in-place using Ecomate. A high density, polyurethane insulation that has zero ozone depletion potential (ODP) and zero global warming potential (GWP).