The Wall Mounted Drinking Water Fountains for Schools, Colleges, Offices, Health Centers and other commercial places. The High efficient compressor and cooling system uses R-134a refrigerant, fully insulated and controlled by positive sensing thermostat. Bubbler reduce waste water by 50% Waterways are lead-free in materials & construction Stainless Steel top Flexible, one-piece Water Saver Bubbler guard Heavy Duty galvanized steel frame Four push pads with Mechanical activation electricity not required External stream height adjustment