The Watts RD-300-AC is a medium-area roof drain supplied with an adjustable underdeck clamp, making it suitable for installations where the drain must be securely supported from below the roof deck. Its epoxy-coated cast iron body provides long-term corrosion resistance, while the flashing clamp and integral gravel stop ensure proper membrane integration. A self-locking polyethylene dome protects the drain from debris, and the unit is equipped with a standard no-hub outlet for straightforward connection.

Key Features

• Adjustable underdeck clamp for secure below-deck support

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

• Flashing clamp with integral gravel stop for watertight membrane attachment

• Self-locking polyethylene dome for debris protection

• Standard no-hub outlet for easy installation