Products / Smith 1800 Roof and Overflow Drain with Deck Plate

Figure 1800 is Smith's combined roof drain and overflow drain mounted together on a single deck plate, so both are fastened from above the roof deck through one rectangular roof penetration with no underdeck clamp. The product page gives Duco coated cast iron drains, a combined flashing clamp and gravel stop on the roof drain, a flashing clamp with a 2 in. water dam on the overflow drain, polyethylene dome strainers on both, and caulk, threaded or no-hub bottom outlets, with options for taller water dams, extensions and other dome materials.