The custom copper leader head (also known as conductor head, hopper head, rain collector box) in video below is a recreation of a cast iron leader head that adorned a church in England for centuries. Rutland Gutter Supply specializes in the highest quality of custom architectural copper work and copper gutter systems. There are over sixty-five different leader head designs now in Rutland's growing collection. View some of these custom copper leader heads and other custom copperwork, such as copper domes, copper cupolas, copper finials, copper chimney caps, copper spires, copper gutters, etc at Rutland Gutter Supply & Architectural Copper Work. Leader heads are mounted inline on the downspouts being fed from a building's gutters. Leader heads mix air in with the water flowing down through the downspouts, eliminating the back pressure or vacuum. See picture below of an installed copper leader head and copper guttering.