Product description: 1. The fan base and blades are made of anodized aluminum and will not rust or corrode. This furnace fan is designed to provide a very wide thermal current. 2. The fan generates its own power through the heat of the independent furnace surface. Working principle: 1. Hang the stove fan on the flue pipe of the stove and use the clamps to deform the fan base so that the fan and the flue pipe fit tightly. 2The hotter the surface of the stove, the more air the fan circulates. 3The stove fan is designed for stand-alone stoves with a flue pipe surface temperature between 55C and 350C. Temperatures above this range may damage the fan and generator set and void your warranty. Operate Automatically: This stove fan is powered by heat and speed automatically controlled by temperature of the stove top.The stove fan operates automatically with the stove temperature between 55 - 350C. Eco-Friendly and Self-Powered: No batteries or electricity required Improved warm air circulation and reduce wood consumption from your stove.Circulating about 180-230CFM. Quiet Operation:The only moving part of the stove fan is the blade assembly, quiet and no noise generate. You will not even know this fan is there, but you will feel the warmth. Easy to Use:No assembly needed, just put the stove fan on the top of stove, the fan will spin with the temperature getting higher. Innovative and Durable Design: The wood stove fan is is made from anodized aluminum, which will not rust or corrode when the fan is getting hot. Net weight; 0.55kg, Gross weight; 0.8kg. Product size: 135*135*160mm Packing size: 200*155*200mm