Description: No batteries or electricity required: The 7 fan uses surface heat to automatically adjust its speed based on surface temperature. Feature: Quiet, less consumption, more efficient. High efficiency: Large, increases efficiency, decreases fuel consumption, saves fuel, quiet. and heat the room quickly. Fireplace Fans Material: Made of high-strength aluminum alloy, which makes the fan burr-free, refined, and clean in surface. No deformation and no discoloration even after long-term working at high temperature. Economy and Environmental Protection: The thermal fan is designed to circulate the warm air created by burning wood or pellets. FULL use of the heat from your wood and disperse it throughout your room, and warm the room quickly, less consumption, more efficiency. reduce fuel consumption. Specification: Floor Material: Rubber Number of: 7 Maximum Temperature: 250 degrees C Size Chart: 18cm x 10cm x 19cm/7.09inch x 3.94inch x 7.48inch Package Included: 1 x Heat Powered Fan