[Self-Powered & Eco-Friendly]No batteries or electricity required! Thermoelectric module acts as a small generator to power the stove fan's motor. Improved warm air circulation results in greater comfort and reduce wood consumption from your stove. Stove operating with normal temperatures between 212F(100C) and 662F(350C). [More Energy Efficient]Fully utilize the heat from your wood stove and disspate it to whole space of your room.The fan circulates warm air at a rate of 270 CFM(cubic feet per minute), and uses 28 % less wood with this stove fan. You can greatly enjoy warmth in you room with less energy comsumption. [ Design]The Stove fan comes with a bi-metallic device in the base of the fan.When the temperature rises above around 482(250), it gently lift the front of the fan to protect the TEG and motor. The fan automatically recover normally as the temperature decreases. [Upgraded Double Motors]With upgrade reinforced 6 blades with double motors, the wood stove fan is designed to circulated warm to 20% than others. Faster speed and larger air volume. Efficiently circulates warm air throughout the room. Made with Anodized Aluminum, no rust or corrode,no deformation and no discoloration even after long time working under high temperature. [Whisper Quiet]With less than 25dB noise, You don't even know the stove fan is there,but you feel the warmth! You enjoy the warm air in a quiet and comfortable environment. Name: Dual- Fireplace Fan Product Size mm: W248xH163xD97 Starting Temperature: 50 Wind Speed and Air Volume: 100cfm (350 0.012m single) 200cfm (350 two total air volume) 4.1m/s Colour:Black Material:Aluminum Package Contents: 1x Dual- Fireplace Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.