The Watts GRD-620 is a green-roof plaza area drain designed for vegetated and paved roof walkways and patio areas. The top assembly is nickel bronze with a heel-proof grate, the body is epoxy-coated cast iron with an integrated bottom flashing clamp and a stainless-steel screened aluminum dome, and the standard outlet is no-hub. A 4″ IPS standpipe is included and can be extended or cut to size for the installation.

Key Features

• Specified for green-roof walkway and patio drainage applications

• All nickel bronze top assembly with heel-proof grate for surface safety

• Lower dome design increases drainage capacity above the roof membrane

• 4″ IPS standpipe included, adjustable by extension or cutting to fit installation depth

• Epoxy-coated cast-iron body with flashing clamp and stainless-steel screened dome