Watts - GRD-620 - Green Roof Plaza Area Drain Strata Systems set within a 90° combination

set within a 90° combination frame

but only stops root tip cell division when the root is close to the Trifluralin nodule

ZB456-3NH-5B

ZN400B-3IB

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

Watts - GRD-620 - Green Roof Plaza Area Drain Strata Systems set within a 90° combinationThe 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