The world s #1 manufacturer of glass door merchandisers. Factory engineered, self-contained, capillary tube system using environmentally friendly R290 hydro carbon refrigerant that has zero (0) ozone depletion potential (ODP), & three (3) global warming potential (GWP). Energy efficient, factory balanced, refrigeration system holds 33(degree)F to 38(degree)F (.5(degree)C to 3.3(degree)C). 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 door. Positive seal, torsion type closure system. LED interior lighting provides more even lighting throughout the cabinet. Safety shielded. "Low-E , double pane thermal insulated glass door assembly with mitered plastic channel frame. The latest in energy efficient technology. 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).