5 Blades Efficient Heat Powered-aluminum Fireplace Fan Blades. Features: Blades: 5-Blade Will Provide Larger Air Volume Making It the Most Efficient Way to Heat Your Room from Your Stove Power Supply: No Batteries or Mains Electricity Required the Thermoelectric Module Acts As a Small Generator to Power the Fanins Motor. Material: The Fan Blade Are Made from Anodized Aluminum Which is Rust-proof Wear-resisting with Good Thermal Conductivity Air Circulation: Impove Warm Air Circulation Results in Greater Comfort and Reduce Wood Consumption from Your Stove. Wide Application: Widely Used for Wood Burning Stove Gas Stove Pellet Stove and More. Specification Material: Aluminum Blade Size: About 172mm/7inch Model Number: Fireplace Fan Type: Other Package Included: 1pc X Blades . The product is fan blade only, excluding the fan machine itself.