Pre-written fan base and blades are made of anodized aluminum that will not corrode or corrode.This stove fan is designed to provide an extremely wide thermal current.The stove fan generates itself with the heat from the stove.The metal strip on the fan base is designed to lift the end of the fan slightly as it approaches maximum operating temperature.Fans and generator units may be damaged if the recommended temperature exceeds 660°/350° C.Keep the fan away from young children while in use. Operation Place the stove fan on the smooth flat surface of the stove side or near the back of the stove.The hotter the stove, the more air the fan circulates.Stove fans are designed for use on freestanding stoves with normal surface temperatures of 185°F to 660°F (85°C to 350°C).Remove the fan from the stove if the temperature exceeds 660 degrees Celsius/350 degrees Celsius.Do not handle stove fan bases.Do not set the stove fan on an unprotected surface when its hot.For moving or carrying fans.A good stove safety practice includes the use of the stove thermometer.