Halsey Taylor S300-2E-Q-PV Economy Free-Standing Water Cooler, Platinum Vinyl Automatic stream height regulator assembly is located inside unit to prevent tampering A constant stream height is automatically maintained under line pressures that vary from 20 to 105 psi Easily cleaned in-line strainer screen traps particles of 140 microns or larger before they enter the waterway Includes a positive sensing thermostat for controlling temperature of storage tank water that is factory set at 50 degrees Fahrenheit The positive sensing thermostat is adjustable  5 degrees Fahrenheit