Six models available (20 to 70 cu. Ft.) utilizing environmentally safe R-134a refrigerant. 3" non-CFC polyurethane foam insulation. Self closing hinged doors each having a cylinder lock; units have adjustable 6" legs and heavy duty epoxy coated shelves. All units have an external digital thermometer and adjustable temperature control, range +2°C to 8°C, factory preset at +4°C. Front of unit is stainless steel with aluminum end panels and interior. 110V, 60 Hz, 1 phase.