Heat Powered Stove Fan for Wood, Fast Start, 4-Blade Fireplace Fans, Ultra Quiet, Increases 80 percent more Warm Air, Energy Saving, Carbon Emission ReductionFeatures:[Auto start] 2022 upgrade technology, faster speed, greater air volume. The thermodynamic stove fan is designed to circulate the warm air generated by the wood or coal or pellet burning stove, with a normal surface temperature of 85C to 400C.[Environmental protection and self-powered] The thermoelectric module is used as a small generator to drive the motor of the fan. No batteries or electricity required Improved hot air circulation can bring greater comfort, and the use of stove wood is reduced by 28 percent .[Safety design] Furnace support is treated with anodized aluminum, which can withstand high temperatures up to 752F (400C), and will not be deformed or discolored even if it works for a long time at high temperatures.Products include:1 x thermal power stove fanProduct specifications:Material: Anodized AluminumStarting temperature:85C (122F)Maximum working temperature: 400C (750F)AirFlow: 60-1CFM (cubic feet per minute)Noise: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.