Features: brand new and high quality Eco-Friendly and Self-Powered: Thermoelectric module acts as a small generator to power the fan's motor. No batteries or electricity required! Improved warm air circulation results in greater comfort and reduce wood consumption from your stove. Long Lifetime: There is a Bi-metal safety device in the base of the fan.If the surface temperature rises above around 300°C, 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 for 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'for t even know the stove fan is there,but you feel the warmth!You will enjoy the warm air of a quiet and comfortable environment. Specifications: Number of blades: 5 CFM: 1000-1300 (r/mim) Speed: 1000-1600rpm Noise: ≤ 25db Start-up temperature: about 55℃ Working temperature: 55℃-350℃ Material: Aluminum Alloy Color: Black Product Dimension: approx. 19x17cm/7.48x6.69inches Net Weight: 1000g/2.20lbs Package Includes: 1x 5 Blades Heat Powered Stove Fan 1x Manual 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.