Sioux Chief 696 series Ox Box 3/8 in compression outlet connection outlet box shall be used where necessary in plumbing supply systems. Box shall allow for mounting with supply line from top or bottom, on-stud or between studs. Unit shall be available with plain valve or valve and water hammer arrester. Arrester shall be certified to ASSE 1010 and shall be UPC listed. Metal support bracket shall install into top track of box for between stud configuration. Outlet connection shall be generally 3/8 in.