Features: [LARGE SIZE & POWERFUL]:6Blades Large Size wood stove fan with double chips, much more powerful to create lager air volume and maximize heat distribution throughout the room. This fireplace fan can make a noticeable difference and help your room warm faster. [HEAT POWERED & ENERGY SAVING]:Non electric and no batteries required, thermoelectric module acts as a small generator to power the fan motor. Wood stove fan improve your stove efficiency and reduce wood and energy consumption. A necessary fireplace accessories for wood burning stoves, gas, pellet stoves, etc. [START AUTOMATICALLY]:Start-up temperature as low as 60C(140F), optimal working temperature is when stove top surface reaches 200C to 320C (392F - 608F). The hotter the stove is, the faster the thermal fan spins. (Dont exceeds 345C / 650F). [DURABLE & SAFE]:Made of Anodized Aluminum, this heat powered fireplace fan can resist high temperature up to 350C(662F). No deformation, rusting nor discoloration even after prolonged operation in high temperatures. [SILENT OPERATION]:Well constructed with new proofread and reinforced 5/6 blades, the wood stove fan is effective but also whisper quiet. You will feel the warm but not even notice the stove fan is there. Specifications: CFM: 180-220 Speed: 1450rpm Blade number: 6 Dimension: 160*90*165mm Noise: 25Db Initial Temperature: 50-350 Operating Temperature range: 140F / 60C~662F / 350C Material: Boron Aluminum Color: Black Package Includes: 1x 6 blade heater stove fan Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color shown in the pictures. Thank you! Please allow 12cm measuring deviation due to manual measurement.