Cabinet designed to provide holding temperatures of 140°F to 180°F (60°C to 82.2°C). Heating system controlled by an exterior on/off switch and electronic temperature control. One (1) stainless steel (for corrosion resistance), heating element for uniform generation of electric heat. Cabinet comes with a total of 3000 watts. 5" (127 mm) diameter plate castors – locks provided on front set. Equipped with one (1) factory-installed interior kit option. Four (4) different interior kits are available (see Kit Options). Entire cabinet structure and solid door are foamed-in-place using a high-density, polyurethane insulation that has zero ozone depletion potential (ODP) and zero global warming potential (GWP).