Marketing InformationInstalled entirely from above deck on flat roofs of any construction, our labor-saving roof drain simplifies installation, saving steps and the need for a second technician. This 15-1/4 in duro-coated cast iron drain will quickly clear large runoff accumulations. The combined flashing clamp and gravel stop protects drain-lines from debris and securely grips flashing and roofing materials without puncturing for a leak-proof installation. The drain is protected by a low-profile, polyethylene dome strainer.