Engineered to save installation costs, the roof and overflow drains of this unit are attached to a single deck plate. This permits both 8-1/2” drains to be secured to the roof deck from above the roof, eliminates the need for an underdeck clamp, and requires only one roof penetration. The roof drain has a combined flashing clamp and gravel stop. The overflow drain is fitted with a combined flashing clamp and 2” water dam. Both are constructed of Duco coated cast iron and are protected by polyethylene dome strainers.
