1.Made from aluminum alloy which is rust-proof, wear-resisting, with good thermal conductivity.2.Improved warm air circulation can increase comfort and reduce wood consumption in stoves.3.No batteries or mains electricity required, the thermoelectric module acts as a small generator to power the fan's moto4.5-Blade will provide larger air volume, making it the most efficient way to heat your room from your .5.Widely used in hot air produced by wood-burning stoves, gas stoves, and pellet stoves. Effectively circulate hot air throughout the room!Features:Working Temprature Range: 140F / 60C~662F / 350CSize:As shownColor: Black/Red/Gold/SilveryBlade Number: 5Start Temperature: 140F / 60CMaterial: AluminumNoise: 25dBSpeed: 1100rpmSize:180mmPackage Including:1pc* 5 Blades Heater Stove FanOnly blades Notice:Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering.Please understand that colors may exist chromatic aberration as the different placement of pictures.