【Efficient Fireplace Fan】Our wood burner fan is made of premium anodized aluminum for better heat conductivity and will not warp or rust under long-term high temperature. The upgraded motor significantly increases the speed and airflow up to 150 CFM, making it easier to distribute the stove heat throughout the room. 【4 Efficient Blades】According to professional testing, 4 blades are the most suitable combination. Indeed, the wind power of 3 blades is not enough and 5 or more fan blades are too heavy for the motor, slow down the rotation and may damage the motor. 【No Electricity Needed, Environmentally Friendly】 Principle: High temperature super thermal conductivity base and low temperature with ultra-fast heat dissipation performance, converts the temperature difference into electricity, which drives the motor. Reduce wood consumption by 32% and save your bills. 【Quiet Operation】The fire fan moves very smoothly, the noise is less than 32dB, so quiet that you won't notice it when it's