Marketing InformationSioux Chief 520-E series Edge Bracketing System shall be used where necessary for securing CTS water supply lines vertically or horizontally within a wood or metal 2x4 stud wall. Bracket shall be a galvanized steel, corrosion-resistant, angle bracket with pilot holes. Hole locations on bracket have been designed to align with other clamps such as 2-hole pipe straps, plastic pipe or suspension straps, drop-ear 90 fittings or other devices. Sioux Chief 520-EC series clamps are specifically designed for the Edge bracket. System shall be approved for use with copper, CPVC, or PEX tube.