Stove Fan Wood Stove Fans Fireplace Fan Heat Powered Fan With 6 Blade Features: Improved hot air circulation can bring greater comfort, and the use of stove wood is reduced by 28%. 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. 70C158F-345C653Fworking temperature,the maximum temperature must not exceed 345C653F: The wood stove fan spins when the temperature is reached 70C158F.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. Specification: Material: Aluminum Product weight: about 700g Product size: length 17.5cm width: 9cm height: 20.5cm Operating speed: 1360RPM (Max) AirFlow80-170CFM Quiet operation, noise is less than 45dB Starting temperature: 70C158F Normal surface temperature: 70-345C Maximum withstand temperature: 345C653F Product include: 1 Stove Fan