Stainless Steel Recessed Supply and Waste Hose Boxes are CUPC certified by IAPMO for U.S. and Canada. Boxes are designed for attractive service in homes and institutions for washing machine supply and waste. In hospitals, they are used with heart-lung, laser, and similar machines. In these applications, the water is used for heating or cooling and then discharged into the drain. Recessed design prevents accidents which are common to surface-mounted boxes or protruding hose valves.