Features: Start Automatically: Upgrade Technology,Faster Speed,Larger Volume.The heat powered stove fan is designed to circulate the warm created by a wood / coal or pellet burning.Efficiently circulates warm throughout the house.Eco-Friendly and Self-Powered: Thermoelectric module acts as a small generator to the fan's motor. No batteries or electricity required Improved warm circulation results in greater comfort and reduce wood consumption from your stove.Whisper Quiet: Newly Designed Blade,Larger Volume,Lower noise.You don't even know the stove fan is there,but you feel the warmth You will enjoy the warm in a quiet and comfortable environment.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.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.Specifications:Blade Qunatity:5CFM: 1000-1300(r/mim)Speed: 1000-1600rpmNoise: 25dbStart Temp.: Around 55Work Temp.: 55-350size: 18 x 15cmMaterial: Metal + Plasticcolour: As shownPackage Contents:1 x Stove Fan(With thermometer)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.