Stiebel Eltrons elegant surface-mount CK heater is perfect anywhere quick heat is needed. Designed in Germany, this quiet fan heater quickly warms an area or maintains a comfortable temperature. Perfect for both retrofit and new construction, the European downdraft design heats a space evenly. This heater is ideal for bathrooms, basements, offices, playrooms, 3-season porches, cabins, campers or RVs, and mobile homes. The built-in fan is extremely quiet in operation at only 49.7 db. A thermostat with an adjustable knob for setting temperature is located on the right side of the unit. In rooms larger than 215 sq. ft., the heater can be operated through a conventional wall-mounted room thermostat. It is designed with a frost protection setting. The lowest thermostat setting will maintain above freezing temperatures in an appropriately sized space. The external casing is made of stove-enameled sheet steel and its sides from plastic. This heater is designed to have its components recycled at the end of its useful life.