Whitehall Thermalator® maintains constant water temperature and comes standard with exposed heating elements. These units provide for comfortable and effective moist heat therapy, promoting both easy cleaning and safety. The tank body, lid, bottom and tank housing are all made from 304 stainless steel for years of trouble-free use. The color coded Thermal-Packs fit onto a sturdy stainless steel, vinyl coated wire rack. Inside the unit is a heating element and temperature sensor. Bottom feet keep the unit from slipping and marring the surface of the countertops. Units have a snap-off thermal protector to prevent overheating. A drain valve located on the back of most units makes them easy to clean. The Thermalator® is offered in sizes that accommodate 4, 6, 8, or 12 hot packs. All units have coved bottoms and are thermostatically controlled. T-4-S, T-6-S and T-8-S are supplied as countertop models. T-8-M and T-12-M are supplied as mobile models with 4 caster wheels (2 are locking).