The RD-700 epoxy-coated, cast iron, dual outlet roof drain/overflow combination accomplishes primary and overflow drainage in a single roof penetration. Unique design requires only half the total roof penetration competitive drains demand. With drain and overflow capability combined in one drain, the RD-700 streamlines installation, saving time and labor. The drain has a flashing clamp, an integral gravel stop, and a 4-inch-high internal overflow standpipe. It also has a secured ductile iron dome and no-hub outlets.