Features: Eco-Friendly and Self-Powered: Thermoelectric module acts as a small generator to power the fan's motor. No batteries 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 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 pellet burning.Efficiently circulates warm air throughout the house. 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: Aluminum Alloy Color: Black, Brown, Gold, Silver Product Dimension: approx. 225x140x110mm/8.86x5.51x4.33inches Net Weight: 1080g/2.38lbs Air CFM: 150-180 Speed: 1400rpm Noise: ≦25db Start Temperature: Around 50°C Working Temperature: 50-350°C 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. Package includes: 1PC 10 Blades Heat Powered Stove Fan