Description The furnace fan is powered converting heat into energy without using any battery or power. So environmentally friendly and low energy consumption. made of metal and will not rust or corrode when the fan gets hot. Heat can be circulated throughout the room. Features- Color: As Shown,- Material: Metal,- Size: 13. 30x10. 00x 18. 00cm/ 5. 23 x3. 93x7. 07in,- Generate electricity converting the heat of a fireplace or wood stove. No electricity is required.- It' s quiet at work. Say goodbye to the loud noise of the electric fan.- Made of high- quality materials, heat- resistant and durable.- The creative Christmas tree shape a festive atmosphere. a perfect Christmas gift for family and friends.- The air volume is not as large as that of the electric fan, but enough to blow hot air into the whole room. Package Including 1x fireplace fan