【Efficient Fireplace Fan】Our wood stove fan is made of high-quality anodized aluminum for improved thermal conductivity and will not warp or rust at long-term high temperatures. The upgraded motor significantly increases speed and airflow up to 150 CFM, facilitating the distribution of stove heat throughout the room. 【Efficient 4-Blade Fan】According to professional testing, 4 blades are the most suitable combination. In fact, the wind power of 3 blades is insufficient, and 5 or more fan blades are too heavy for the motor, slowing rotation and potentially damaging it. 【No Electricity Required, Environmentally Friendly】 Principle: The high thermal conductivity and low temperature base with ultra-fast heat dissipation performance converts the temperature difference into electricity, which drives the motor. Reduce your wood consumption by 32% and save on your bills. 【Quiet Operation】The wood stove fan moves very smoothly, the noise is less than 32 dB, so quiet you won't even notice it