Sioux chief 696 series OxBox single hole boxes shall be used where necessary in accessible plumbing applications. The boxes shall provide an appropriately sized hole for 1-1/2 in and 2 in drain, waste, and vent (DWV) lines. Boxes accept existing frames for OxBox product. Boxes incorporate four mounting tabs, two nail ways, and a support bar channel used with common, galvanized, flat brackets. Boxes can be clipped together using a 696-BC galvanized box clip in any iteration for use as necessary.