Features: Powerful Fireplace Accessories --- Silent 4 blade heat powered wood stove fan, widely used for gas, electric, pellet stove or wood burning stove, stove fans will work well and disperse hot air efficiently. No Power Consumption --- No batteries or electricity needed. The stove fan is powered by heat from your fireplace or wood burning stove, the hotter the stove is, the faster the stove fan spins. Increases the efficiency of your freestanding stove heater/pellet heater or wood log burner to generate warmth. Easy Operation --- Automatically working in temperature over 50degrees C / 122degrees F with speed self-regulating according to the temperature in the room. Silent Work --- The only moving part of the stove fan is the 4 blades assembly, so the working noise is quite low, no too much noise. You even do not know the stove fan is there, but you will feel the warmth well. Overheating Protection --- The built-in overheat protect set is designed to protect the using of the stove fan and protect your family all the time. Specifications: Material: Aluminum alloy Starting Temperature: 50 celsius (122degrees F) Optimum Operating Temperature: 80~250 celsius (176~482degrees F) Item Size: 193 * 136 * 55mm / 7.60 * 5.35 * 2.17in Item Weight: 510g / 18.00oz Package Weight: 717g / 25.30oz Package Size: 21.5 * 15.5 * 13.5cm / 8.46 * 6.10 * 5.31in Package List: 1 * Stove Fan 1 * Manual (English)