Abstract: A cooling panel for use in drawing off excess heat from and protecting the side walls and roof of a furnace such as an electric arc furnace, the cooling panel being preferably made entirely out of oxygen-free pure copper. The cooling panel is a wall having a series of strips welded on one side, the strips having recesses on the side adjacent the wall to form channels between the strips and wall for circulating a cooling fluid therethrough. The cooling panel is also provided with inlet and outlet manifolds for supplying and removing the cooling fluid to the passages of the cooling panel. The strips and the manifolds are preferably made using an extruding process and assembled using a tungsten inert gas welding process.