Whitehall Thermalators maintain a constant water temperature and come 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 type 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 the units makes them easy to clean. This stationary unit has a capacity to heat eight standard size (TST1) hot packs.