Feature:1. 4 Blades fireplace fan, uses a thermoelectric module as a small generator to drive the fan motor.2. No need for batteries or electricity to improve the circulation of hot air and reduce the wood usage of the stove by 28%.3. Designed to circulate warm air produced by wood/coal or burning stove, the normal surface temperature is 50400.4. Can withstand high temperature up to 752 (400), and it will not deform or discolor even after working at high temperature for a long time.5. The base with a safety device, if surface temperature exceeds 300, safety device will gently lift the front of the fan to protect the TEG and motor.6. The more hot the stove, the faster the stove fan rotates, which is suitable for installation above the fireplace to increase indoor temperature.Specification:Condition: 100% Brand NewItem Type: Fireplace FanMaterial: IronWeight: Approx. 710g / 25ozSize: Approx. 11.2x8x19.7cm / 4.4x3.1x7.8inFeatures: No need to use batteries or powerApplication: Used in fireplaces to promote the increase of indoor temperature..Package List:1 x Fireplace Fan1 x English ManualNote:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.