Eco Friendly, No Batteries or Electricity required- The stove fan is powered by heat from your fireplace or wood burning stove. Adjust its speed automatically with the stove temperature. The the stove is, the faster the stove fan spins. stove fireplace fan- The stove fan will help reduce the fuel consumption and make the room warmer quickly, the stove fan is widely used for gas, electric, pellet stove or wood burning stove, stove fans will work well and disperse hot air efficiently. Silent Operation- The only moving part of the stove fan is the blades assembly, so the working noise is below 25DB, very quiet. You can' feel the stove fan, but you will feel the warm. Overheating Protection & Longer -There is a Bi-metallic device in the base of the stove fan.If the temperature rises above around 300, the device gently elevates the front of the fan to protect the motor. Working Temperature- The general working temperature of the stove fan is 85C - 350C(185F - 660F). Usually the fan gets at about 55C, and turns most efficiently when the temperature reaches about 250C-300C. Name: Fireplace Fan (Magnetic/Upright Dual-Purpose) Product Dimensions (mm): W180xH202xD97 Starting Temperature: 50 (Upright), 90 (Flue Tube) Wind Speed and Volume: 162.5cfm at 350 (Upright) 118.4cfm at 350 (Flue Tube) Colour:Black Material:Aluminum Package Contents: 1x Fireplace Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.