The Champion Standard Wall Support is for use on wall pass thru installations. The wall support provides both vertical load bearing and lateral support. The first wall support is fastened to the first chimney length as a base support and then at a minimum of every 8 feet on chimney sections above. The support provides up to 4" of adjustment in or out from the vertical structure. This support fits pipe diameters of 5", 6", 7" and 8".