Sioux Chief 696 series OxBox frame inserts shall be used where necessary in accessible plumbing applications. Frame inserts shall fit into the frame of any 696 series OxBox outlet box. Louvered frame insert shall allow for air flow to a plumbing device when required. The solid frame insert shall limit access to and conceal the box contents. The solid frame insert with cutout shall allow for supply hoses to be connected to valves inside the box when frame insert is installed.