This adjustable, epoxy coated, cast iron roof drain features a threaded extension assembly, a flashing clamp with an integral gravel stop, a self-locking polyethylene dome, 137 square inches of free area and a 4 inch no hub outlet. It can be purchased BAA compliant. Other options include a galvanized body, a sump receiver, an underdeck clamp, deck flange with adjustable extension, side outlet, an internal water dam, vandal proofing and a variety of domes.