Watts RD-304-AC - Part of the RD-300-AC Series ZC100F-3NH It is ideal for concrete

It is ideal for concrete floor installations

With its scrim-reinforced structure

or surface finishes

and a fixed 15½″ × 15½″ square top equipped with a heel-proof ductile-iron grate

Watts RD-304-AC - Part of the RD-300-AC Series ZC100F-3NH It is ideal for concreteThis Watts Drains adjustable, epoxy coated, cast iron roof drain features a compression seal 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. Features Compression seal adjustable No hub 137 SQ IN free area Epoxy coated cast iron Specifications Body Material Epoxy Coated Cast Iron Brand Watts FreeArea 137 SQ IN Lead Free Not In Scope Outlet