4.9 inches Height Heat Powered Wood Stove Fan For Wood / Log Burner/Fireplace. Condition is "New Open Box". Helps circulate hot air from stove throughout the whole room, increase the efficiency of fireplaces with less fuel. Heat Powered, no batteries or electricity required. Less consumption,  more efficiency, innovative and durable design. Silent operation. No manual or instructions included. Simple to set. If need more info please check Google. See all pictures included before ordering. Shipped with USPS Priority Mail.