[Upgrade Wall Mounted Double End Chimney Fan]Higher airflow: It has a motor specially designed for this furnace fan and double ends with 12 blades, providing a very wide heat flow, distributing the heat from the furnace more efficiently.[Energy Saving Oven Fan]No battery or electricity required. It is powered by the heat generated by the fireplace or fireplace and directed to the bottom of the fan to drive the blades. The higher the oven temperature, the faster the guide vanes rotate.[New design, save space]Fireplace fans contain magnets.Can be magnetically attached to your fireplace or installed using our 2 included clamps.The magnetic installation method is only suitable for iron fireplace pipes.[Silent operation of furnace fan]The furnace fan runs less than 25 decibels, which is very quiet. You can hardly hear the sound. It improves the circulation of hot air in the room, which increases comfort.[Oven fan operating temperature]: The operating temperature is approx. 50C to 350C (122F to 662F), fan speed automatically adjusts to oven temperature. Conversion is highest when the temperature reaches about 250-300C.