RD-100-CP epoxy coated cast iron roof drain with flashing clamp with integral gravel stop, 12-3/4 in. x 12-3/4 in. (324 x 324mm) square epoxy coated ductile iron heel proof promenade top, and no hub (standard) outlet. Constructed to withstand climate and the rigors of long-term use. Available 2" - 4" pipe sizes with many optional accessories and with 12" x 12" Promenade Top.