Watts - GRD-620 - Green Roof Plaza Area Drain Strata Systems This is an advantage as

This is an advantage as most other root barriers fail at the joint rather than on the panel itself

It is non-biodegradable

ZN400N-2NH

ZN400B-3IB

ZN415-SZ1-2NL

Watts - GRD-620 - Green Roof Plaza Area Drain Strata Systems This is an advantage asThe 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