4-Blade Heat Powered Stove Fan for Wood/Log Burner/Fireplace Increases 80% More Warm Air than 2 Blade Fan. 4.72″D x 8.27″W x 8.27H. Number of Blades 4. Heat powered stove fan. Mounting Type Freestanding, Desk Fan. Controller Type Button Control. Recommended Uses For Product. Heat powered – no batteries or electricity required. Efficiently circulates warm air throughout the room. Less consumption, more efficiency. Innovative and durable design. Why do we need to use the stove fan? Instead of the heat rising vertically with a standard stove, the stove fan uses its blades to divert the warm air horizontally. The extra movement of air will help warm the whole room, not just the ceiling and the area near the stove. How is working without batteries or electricity? The VODA stove fan runs without batteries, cords or electricity, it generates its own power by the heat from the stove surface. The base of the fan transmits the heat to TEG units, and TEG units convert the heat energy into energy to drive the fan to spin. The fan spins when the temperature is reached around185 °F. The stove fan is designed for usage on freestanding stoves with a normal surface temperature of between 185°F – 660°F. Temperatures above this range may damage the fan and the TEG units. Whisper-Quiet and Easy to Install. The only moving part is the blade assembly. You won’t even know this fan is there – but you’ll still FEEL the WARMTH! The stove fan base and blade are made of anodized aluminum which will not rust or corrode. Just position the stove fan on a smooth flat surface of your stove top, near the side or back of the stovepipe. It will start to rotate when the stove surface gets hot enough. This wood stove fan starts to spin when the temperature is around 55°C/ 131°F, and it works most efficiently when the temperature gets around 250°C/482°F. Please avoid using the stove fan at high temperature continuously to ensure a longer life time. Never handle the base of the stove fan, do not set the stove fan down on an unprotected surface when hot. To move or carry the fan, always use the extendable handle while wearing gloves. Please keep fan away from small children when in use. Good stove safety practice includes the use of a stove thermometer(provide by yourself). 4.1 out of 5 stars. 4.4 out of 5 stars. 3.8 out of 5 stars. 3.0 out of 5 stars. 6.3″X4.3″X7.5. 8.3″X4.9″X9.0. 7.6″X4.3″X8.8. 7.8″X4.7″X12.2. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.