JOSAM 21500-3 Series 21504-3-16-Z Large Sump Roof Drain With Deck Clamp Assembly and Drain Receiver, 9-3/4 in H, Dome

21500 Series coated cast iron roof drain, large polypropylene locking dome, WEJLOC® non-puncturing clamp ring with integral gravel stop, large sump with wide roof flange and bottom outlet.