Houseware, Fireplace, heat powered wood burning stove fan Features:, NO need of any ELECTRICITY, Cords or Batteries!, Self Powered using the heat o fthe stove or fireplace, Fan Outputs 100 CFM to helpcirculate warm air throughout the room, Fan speed varies automaticallywith stove or fireplace temperature, Fan speed varies automatically with wood stove or fireplace temperatures of 100 345 oC, Ultra Quiet Helps circulatewarm air throughout, Fireplace Accessories, Batteries ...