BARRIER-FREE VERSACOOLER II Energy and Water Conservation Technology. 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