The Watts RD-300 is a medium-area roof drain designed for dependable primary drainage on commercial and industrial roof systems. Its epoxy-coated cast iron body provides strong corrosion resistance, while the flashing clamp and integral gravel stop create a secure, watertight connection to the roofing membrane. A self-locking polyethylene dome protects the drain from debris, and the unit is supplied with a standard no-hub outlet for straightforward installation.

Key Features

• Epoxy-coated cast iron body for long-term durability

• Flashing clamp with integral gravel stop for secure membrane integration

• Self-locking polyethylene dome for debris protection

• Standard no-hub outlet for easy plumbing connection

• Suitable for medium-area primary roof drainage applications