1. Upgrade 6 Blades Heat Powered Wood Stove Fan The wood stove fan heat powered is composed of 6 blades, and the diameter increased to 175 mm which can drive more air circulation when it works, with the stove fan, warm air will be pushed into the room in horizontally rather than simply rises up to the ceiling or being trapped around the stove which maximizes heat distribution throughout the room. 2. Quiet Operation Giving you a peaceful atmosphere! upgrade wood fireplace fan heat powered blades are newly proofread which ensure low noise (<25 DB) when operation, never disturb even if you are sleeping or reading. 3. Eco-friendly In times of energy shortage, no batteries or external power required is a great advantage of this fireplace fan non electric which means you don't need extra power. The fan is perfect for all kinds of wood burning stoves, gas stoves, pellet stoves, which have flat surfaces and temperatures can get above 176°F (80°C). 4. Overheating Protection There is a Bi-metallic safety device at the base of the stove fan. When the surface temperature rises around 300℃, the safety device gently elevates the front of the fan to protect the stove fan, by which it ensures the stove fan a longer lifetime. 5. Thermoelectricity Working Principle Thermoelectric fan is a very clever device, as well as what it does with regard to distributing the heat around your home it is also self-powered, the heat powered fan has a small motor inside with two semiconductors, the bottom of the pellet stove fan gets hot from the stove and the top of the stove fans is cooler, the differential between the two drives the motor which in turn rotates the blades of the fireplace fans heat operated. 6. No Installation Required No installation required, you only need to place this stove fan on a smooth flat surface of your stove top, It will start automatically when the surface temperature reaches about 176°F(80°C). The hotter the stove top is, the faster the stove fan rotates. Specification: Blade number: 6 Dimension: 17.5×11×21.3cm (L/W/H) Weight: 566g Noise: ≤25dB Working temperature: 176-653°F(80°C-345°C) Material: Aluminum Color: Black Tips: 1. Never handle the base of the stove fan. 2. Please keep fan away from your children and pets. 3. Do not set the stove fan down on an unprotected surface when hot. 4. To move or carry the fan, always use the extendable handle while wearing gloves. 5. The hot blast stove fan will not directly increase the temperature, but can only be a tool to accelerate the heat transfer of the chimney.