Watts - GRD-640 - Green Roof Metered Overflow Drain ZC100F-2NH Ideal for driveways

Ideal for driveways

ZB400H-2NH

with roll heights of 10"

This product ships with eleven 48-inch oak stakes

This product comes in a box of 10 fittings

Watts - GRD-640 - Green Roof Metered Overflow Drain ZC100F-2NH Ideal for drivewaysThe Watts GRD 640 is a stainless steel metered overflow drain designed for green roof and planter applications where controlled secondary drainage is required. Its epoxy coated cast iron body provides long term durability, while the perforated stainless steel gravel guard with secured solid cover helps prevent debris and ballast intrusion. The ABS standpipe includes a 5 8 inch orifice to regulate overflow, and the drain comes standard with a no hub