Watts RD-304-AC - Part of the RD-300-AC Series ZA100F-8NH The 3-gallon size is best

The 3-gallon size is best for group-planting annuals

Channel 19 is a sloped section with an invert depth range from 8

Robust Wet-Area Construction: Built with materials that resist moisture

Heavy-Duty Cast Iron Construction: Dura-coated cast iron body resists corrosion

137 square inches of free area and a 5 inch no hub outlet

Watts RD-304-AC - Part of the RD-300-AC Series ZA100F-8NH The 3-gallon size is bestThis 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