Watts - GRD-640 - Green Roof Metered Overflow Drain Tactile Paving Dura-Coated Cast Iron Upper &

Dura-Coated Cast Iron Upper & Lower Bodies: Strong and corrosion-resistant construction that holds up under load and weather exposure

corrosion-resistant ductile iron ensures lasting performance

This drain features an epoxy-coated cast-iron body with an anchor flange and dual weepholes for enhanced drainage around the perimeter

SITEDRAIN DS-183 geocomposite drain is composed of a dimpled polymeric perforated core with a nonwoven geotextile bonded to both sides

A durable alternative to concrete drains

Watts - GRD-640 - Green Roof Metered Overflow Drain Tactile Paving Dura-Coated Cast Iron Upper &The 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