Features: Introduction: The heat is used to generate electricity which is used to circulate the hot air from the wood-burning fireplace. Does not require any batteries or power supply. Easy to Use: Just place it on top of a burning stove and it absorbs heat to drive a fan that blows hot air over the wood-burning fireplace directly into the living area increasing air circulation in the room and making the stove more efficient. Self-Adjustment: The rotation speed of the fan varies depending on the temperature of the wood-burning stove. The higher the stove temperature the faster the rotation speed. When the fireplace temperature is so low that the fire goes out the rotation speed slows down until it stops rotating. Advantages: To save fuel fans distribute heat from stove for better fuel efficiency; small in size and fits narrow spaces. Applications: It is suitable for independent stoves and the surface temperature of the fireplace is between 65C and 350C. Temperatures above this range may damage the fan and generator set and void your warranty. Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material: Alumina Air volume :180-210 Blades :5 Wind speed: 800-1100rpm Noise :35dB Working temperature :60-350c Battery: none Net weight: 0.51kg Product size: 150*150*152mm Color/Style: As the picture shown includes: 1 x Stove Fan "