Features:Eco-Friendly and Self-Powered:Thermoelectric module acts as a small generator to power the fan&39;s motor. No batteries or electricity required Improved warm air circulation results in greater comfort and reduce wood consumption from your stove.Longer Lifetime:There is a Bi-metal safety device in the base of the fan.If the surface temperature rises above around 300C, the safety device gently elevates the front of the fan to protect the TEG and motor.Safty Design:The stove fan support is made with Anodized Aluminum, able to resist high temperature, no deformation and no discoloration even after long time working under high temperature.Start Automatically:Upgrade technology,faster speed,larger air volume.The heat powered stove fan is designed to circulate the warm air created by a wood / coal or pellet burning.Efficiently circulates warm air throughout the house.Whisper Quiet:Newly Designed Blade,Larger Air Volume,Lower noise.You don&39;t even know the stove fan is there,but you feel the warmthYou will enjoy the warm air in a quiet and comfortable environment. Package Includes:1PC 4-Blade Heat Powered Stove Fan Specifications:Material:Aluminum AlloyColor:Black, Bronze, Gold, SilverProduct Dimension:110x70x145 mm/ 4.33x2.76x5.71 inchesNet weight:500g/ 1.10 lbsAir Volume:180-210Wind Speed:800-1100rpmNoise:35dBWorking Temperature:60-350C note:Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.