Operating temperature range: 140F/60C~662F/350CSize: as shown in the pictureColour: BlackNumber of blades: 5Starting temperature: 140F/60CMaterial: AluminumNoise: 25 decibelsSpeed: 1100 rpmPackage includes: 1*5 blade heater furnace fan/1*5 blade furnace fan bladefeature:This stove fan is powered by converting heat into energy without using any batteries or electricity.The operating temperature range is approximately: 140F/60C~662F/350C. The higher the temperature, the faster it starts to rotate.Heat can be circulated throughout the process.This stove fan is quiet and quiet.Note: Temperatures cannot exceed 662F when using a furnace fan.notify:Please allow 1-3cm error due to manual measurement and make sure you don't mind before ordering.Please understand that due to different placement of pictures, there may be chromatic aberrations in colors.Our products are made from the highest quality materials and designed to provide you with the best user experience. We strive to ship all orders within three days of purchase, with an estimated delivery time of 8-15 days.When shopping, pay attention to the size and dimensions of the product to make sure it fits your needs. In the title and we provide detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please feel free to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. we hope you like it