Features: 1. Upgrade 5 Blades Wood Stove Fan: The fan for wood stove is equipped with 5 blades, has faster speed and larger air volume than 4 blades, the heat active stove fan is designed to circulate the warm air created by a wood/coal or pellet-burning, efficiently circulates warm air throughout the rooms. 2. No Power Required: The stove fan does not need electricity or a battery, powered by heat. Wood Stove Fan for Log Burning Fireplaces, gets power from the heat produced by your fireplace, wood-burning stove or pellet stove. 3. Safe and Quiet: Furnace support is treated with anodized aluminium, which can withstand high temperatures up to 662F (350C), and will not be deformed or discoloured even if it works for a long time at high temperatures.The unique design of the blade assembly can keep the fan quiet during the fastest operation. 4. Easy to Use: No installation required, just place the wood stove fan on the smooth and even surface of the hob, near the side or back of the oven pipe. 5. Note: The recommended work surface temperature is 50 C / 122 F to 350 C / 662 F (with thermometer). Specification: Material: Alumina Product Color: Black Product Size: 135 x 75 x 120mm Product Weight: 390g Air Volume: 180-210 Leaves: 5 Leaves Wind Speed: 950-1250rpm Noise: 35dB Package Included: 1 x 5 Blade Heat Powered Stove Fan + 1 x Thermometer