Sioux Chief 870 Series cleanout cover shall be used where necessary in drainage systems. Cleanout cover shall be fastened with a bolt to a cleanout plug or wall bar. Cleanout covers shall be stainless steel for corrosion resistance, and be of sufficient diameter to completely cover cleanout access hole. Covers shall be 16 or 20 gauge for light foot traffic or wall applications respectively. Stamping shall be available for easy recognition.