Sioux Chief 867 Series cast iron roof drain and overflow fixture shall be used where necessary in drainage systems. Drain shall be have a one-piece, enamel coated cast iron body with separate, No-Hub connections for primary drain and overflow outlet. Cast iron clamping collar and dome strainer shall be included for both drain and overflow outlets. Drain shall be used in flat roof systems with waterproofing applied per standard installation practices. Designed in accordance with ASME A112.6.4-2003.