Watts - GRD-640 - Green Roof Metered Overflow Drain Strip Drian with the diamond reinforcement pattern

with the diamond reinforcement pattern actively surrounding and stopping tears as soon as they occur

and a gasket seal between the body and top assembly to prevent leaks to lower levels

Channel 9 is a sloped section with an invert depth from 14

The Spee-D® Channel Drain Grate features an elegant wave design with integrated openings that block leaves and debris from entering and potentially clogging drain pipes

Additionally it does not effect the soil's hydrology

Watts - GRD-640 - Green Roof Metered Overflow Drain Strip Drian with the diamond reinforcement patternThe 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