True's undercounter units are designed with enduring quality that protects your long term investment. Designed using the highest quality materials and components to provide the user with colder product temperatures, lower utility costs, exceptional food safety and the best value in today's food service marketplace. Oversized, environmentally friendly (134A) forced-air refrigeration system holds 33°F to 38°F (.5°C to 3.3°C). All stainless steel top and ends. Matching aluminum finished back. Front breathing. Energy efficient, "Low-E", double pane thermal insulated glass door. Heavy duty PVC coated wire shelves. Foamed-in-place using Ecomate. A high density, polyurethane insulation that has zero ozone depletion potential (ODP) and zero global warming potential (GWP).