Specifications:CFM: 180-210Speed: 1100rpmBlade number: 5Noise: 25dBStart Temperature: 122°F / 50°CWorking Temprature Range: 122°F~662°F / 50°C~ 350°CMaterial: Anodizing AluminumOverall Size: 180*100*195mm(Height*Width)Type: Wall MountedFeatures:1.This stove fan is powered by transforming heat into energy, without using any battery or electricity.2.The r ange of working temperature is about: 1122°F~662°F / 50°C~ 350°C, higher the temperature, faster it starts to spin.Attention: the temperature can not be over 662°F when using the stove fan.3. Can circulate heat throughtout home.4. Silent work and no noise.Package includes:1x Stove Fan