Features:- Start automatically: upgrade technology, faster speed, larger air volume. The heat powered stove fan is designed to circulate the warm air produced by a wood/coal or pellet burn. Efficiently circulates warm air throughout the home.- Eco-friendly and self-sufficient: The thermoelectric module acts as a small generator to drive the fan's motor. No batteries or electricity required! Improved warm air circulation leads to more comfort and reduces the wood consumption of your stove.- Quiet: Redesigned blade, larger air volume, lower noise. You don't even know the stove fan is there, but you can feel the heat! You will enjoy the warm air in a calm and comfortable environment.- Fireplace Fans Material - Made of high strength aluminum alloy which makes the stove fan no burr, fined and neat surface. no deformation and no discoloration even after long time working under high temperature.- No Batteries or Electricity Required - The Stove Fan Uses Heat From the Stove Surface to Spin,Adjust its Speed Automatically with the Stove Surface Temperature.Specifications:Blade quantity: 7CFM: 1000-1500 (rpm)Speed: 1800 rpmNoise: ?25dbStarting temperature: approx. 50CWorking temperature: 50?~350?Material: aluminum alloyColor: BlackWarm tips:1. The heat-powered stove fans do not bring a direct increase in temperature, just a tool to speed up the heat transfer of the chimney.2. Maintenance Free: Just clean it occasionally and put some light oil on the cutter shaft to keep it spinning smoothly and quietly!3. Do not place the hob on an unprotected surface when hot.Delivery content:1x Stove fanNote:1. Due to manual measurement, please allow 1-3cm error. Please make sure you don't mind before you bid.2. Due to the light and screen difference, the item's color may be slightly different from the picture.3. If you have problems with the product, please contact us by e-mail first. We will give you a satisfactory solution.