Chattanooga Stationary Hydrocollator Heating Unit - E-1Durable and easy to maintain, this high quality stainless steel unit gives you a constant supply of temperature consistent HotPacs. Comes complete with Hydrocollator Moist Heat Steam Packs. Durable and high quality Stainless steel construction Thermostatically controlled temperature Full fiberglass insulation ensures minimum energy use and prevents heat loss for consistent, even heat Easy maintenance Simple to fill and drain and no plumbing required