Stove Fan Wood Stove Fans Fireplace Fan Heat Powered Fan With 5 Blade Product selling point: Heat powered: Heat powered wood stove fans generate power by converting the heat from stove into electricity, electricity generating units convert the heat energy into energy to drive the motor, then the blades spin.No batteries or electricity required, eco-friendly. Large air volume: Diffuse warm air throughout the whole room. Just place the stove fan on a smooth flat surface of your stove top ,near the side or back of the stovepipe. Need to place stove fan at least 4" away from stovepipe. It will work when the stove surface hot. 50C(122F)-350C662F) working temperature: The wood stove fan spins when the temperature is reached 50C(122F).The hotter the base of the fan gets, the faster the fan turns, and the more air the fan circulates into room. It will slow down and stop as the stove cools. Aluminum material: Stove fan is made from anodized aluminum, which will not rust or corrode when the fan is getting hot. Protection functionThere is a iron sheet on the fan bottom, with the increasing of temperature, the iron sheet will rise to protect the fan from damage. Specification Material: Aluminum Size:18.5x16cm Air flow: 160-200CFM Running speed: 1400RPM(Max Silent operation, the noise less than 25dB Product include: 1 Stove Fan