Features: Our stove fan composed of 7 blades, can produce more warm air and improve the efficiency of the product, give you maximum- benefits. The stove fans start automatically when placed on top of a stove and adjust their speed with the stove temperature. As the stove burns down and cools, the fans automatically shut off. This eco-friendly fan requires no batteries or external power, it ispowered by the heat produced by your fireplace or wood-burning stove; The heat of the stove top isconducted through the base of the fan and converted to electricity which powers the fan motor. This low-maintenance fan will help keep your home warm. This fireplace fan ismade from rust-proof anodized aluminum, wear-resisting, with good thermal conductivity. The fireplace fan uses upgraded technology, faster speed, and greater air volume without any noise. The size of this Heat Powered Stove Fan issmall in volume and fits narrow spaces. Idealfor all kinds of wood-burning stove, pellet stove, etc. You can enjoy the warm air in a quiet environment. Just place the stove fan on a flat, smooth surfaces on the top of your stove, near the side or back of the stovepipe at least 4 inches from the stovepipe. Turns most efficiently when the temperature reaches about 65-250. Do not place the fan on a surfaces over 350. Specifications: Material:Aluminum Alloy Color:Red/Black/Gold/Silver Air volume: 180-210 Leaves: 7 Blades Wind speed: 800-1100rpm Noise:35dB Working temperature: 60-350 Size:Approx.140x100x195mm/5.51x3.93x7.67 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Fireplace Fan