Features: brand new and high quality brand new and high quality Automatic start: technology upgrade, faster speed and greater air volume. The heat stove fan circulates from burning coal or pellet wood/warm air. The warm air circulates effectively throughout the house. Environmental for protection and power supply: The thermoelectric module acts as a small generator to supply power to the fan motor. There is no battery or electricity. Improved warm air circulation can increase comfort and reduce firewood consumption. Long service life: There is a double-layer metal safety device at the bottom of the fan. If the surface temperature rises above 300°C, the safety device will push up the front of the fan, gently to protect the TEG and motor. Mute and quiet: the newly designed blades, larger air volume, lower noise. You don'for t know the stove fan, but it makes you feel warm! You will enjoy the warm air in a quiet and comfortable environment. Safety design: The furnace fan bracket is made of anodized aluminum, which is resistant to high temperatures, and will not deform or change color even if it works for a long for time at high temperatures. Specifications: Material: Aluminum Alloy Weight: 520g Size: Length: 110MM/4.3" Height: 125MM/4.9" Package Includes: 1x Heat Powered Stove Fan 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.