1 Set * Replacement Fan Blade feature - Heat powered stove fan - Increases the efficiency of your freestanding stove or wood / wood burner and circulates warm air around your home. - Environmentally friendly and self-sufficient - A thermoelectric module acts as a small generator to drive the motor of the fan. No batteries or electricity required -Operation automatically between 60 - 350 C at a speed that regulates itself depending on the room temperature. - Extremely quiet operation, compact size, no installation required, easy to use. - Made from heavy duty black steel with a handle for easy portability. specification Weight: 0.84 kg Noise: 35dB Air volume: 180-210 Wind speed: 800-1100 rpm Working temperature: 60-350 C. OEM: applicable Certificate: CE and RoHs Leaves: 5 leaves Blade size: 7 inch/172MM Color: Black