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. Longer 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. Save Energy: Efficiently drive warm air throughout the room. Less consumption, more efficiency. 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 in a quiet and comfortable environment. Specifications: Material: Aluminum Alloy Color: Black, Bronze, Silver Product Dimension: approx. 165x195x105x75 for cm/ 6.5x7.7x4.1x2.9 inches Net Weight: 795g/ 1.75 lbs CFM: 180-200 Speed: 1300rpm Noise: ≦25db Working Temperature: 50-350°C Package Includes: 1PC 6 Blades Heat Powered Stove Fan 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.