,HIGH QUALITY FEATURES: High quality anodized extruded aluminum material harnesses the heat generated by the wood stove to help heat the room faster and more efficiently. There is an integrated automatic device for the protection system in the fan base to prevent it from overheating. No wires, plugs or batteries required, powered by stove/fireplace heat. The unique fan blade design is safe and efficient, with more movement and a wider furnace temperature range. Suitable for wood burning and multi-fuel chimneys. Eco-friendly fan, ultra-quiet, no batteries or electricity required. This fireplace fan is unlike other stand fans. It has 2 independent coils. Suitable for home pipe installation, convenient and practical. Suitable size is 5-6 inches. If the pipe is not within this size range, you can purchase another one. Add extra warmth and comfort to your home this winter. Only stove fan and two coils, other accessories demo in the picture are not included. Specifications: Item No.: SF404B Material: Anodized Aluminum Color: Black Dimensions: app.105x110x135mm/4.1x4.3x5.3in Working Temperature: 50-350C Speed: 1300rpm Number of blades: 4 Noise: less than 25db Quantity: 1 set Coil installation method: 1. Use a screwdriver to turn the left and right nuts to control the size. 2. Adjust to the appropriate size and secure the fan. NOTE: Coil is suitable for chimneys 5-6 inches in diameter. Please allow 0-1 cm error due to manual measurement. Please make sure you don't mind before bidding. Due to differences between monitors, images may not reflect the actual color of the item. Thank you. Package contents: 1 x stove fan 2 x coil