The Watts RD-300-F is a medium-area primary roof drain designed with an integral flange for secure membrane attachment on commercial and industrial roof systems. Its epoxy-coated cast iron body provides long-lasting corrosion resistance, while the flashing clamp and built-in gravel stop help create a watertight seal. A self-locking polyethylene dome protects the drain from debris, and the unit includes a standard no-hub outlet for straightforward installation.

Key Features

• Integral flange and flashing clamp for secure roof-membrane integration

• Epoxy-coated cast iron body for durability and corrosion resistance

• Built-in gravel stop to maintain drainage performance

• Self-locking polyethylene dome for debris protection

• Standard no-hub outlet for easy plumbing connection