Upgrade 4-Blade Log Burner Fan Stove Fans Heat Powered for Wood Burning Stove/Fireplace Eco Friendly and Efficient Fan

Eco Friendly and Self Powered- This log burner fan is powered by heat, and its spinning speed is automatically controlled by temperature of the stove top. Economical- No batteries or electricity required. The stove fan spins automatically when the temperature gets around 80 °C. The hotter the stovetop gets, the faster the stove fan turns, and the more air it circulates into the room. Whisper- Silent operation, started automatically. The working noise of this log burner fan is less than 25db as the only moving part is the blades assembled, which makes the wood stove fan almost silent even at the highest speed Innovative and Durable Design- Made of anodized aluminum, which will not be rusty or corroded. This stove fan comes with a bi-metallic safety device at the bottom. When the surface temperature rises around 250-300°C, it will gently lift the front of the fan to protect the TEG and motor. Overall Size: 21L*12.5W*23H(cm). No installation required. You can use the heat powered fan once it is received. To ensure the stove fan a longer lifetime, please cool it down for some time when using the stove fan continuously for several hours.