Watts - GRD-670 - Green Roof Drain w/Auxiliary Inlet

Watts - GRD-670 - Green Roof Drain w/Auxiliary InletThe Watts GRD 670 is a green roof planter drain designed for primary drainage in large planter beds and vegetated roof sections. Its epoxy coated cast iron body provides strong corrosion resistance, while the perforated stainless steel ballast guard helps prevent soil and debris from obstructing flow. A secured solid cover allows for surface level maintenance access, and the unit includes a standard no hub outlet for straightforward installation. Key

8” Length

and the secured cover allows controlled access to the drainage line

It features an epoxy-coated cast-iron body with an integrated anchor flange and perimeter weepholes for effective drainage of seepage

Z415N-6NL-7N

paired with a trap or basket to capture debris and allow simple removal for maintenance

ZRB121-4IC

it is also easy to clean

This fabric can provide a separation layer with high permeability

or decorative flooring—so the drain blends naturally into the environment

offering a robust barrier with an estimated lifespan of 6-10 years

and the system is fully compatible as part of the NDS Profile Channel series

It is a tough and reliable option when you are looking to keep silt