Storm Water Filter Drain

The d-Rain Joint is a green alternative storm water filter drain for hard surfaces. As an exterior linear filter drain for impervious surfaces, the unit puts filtered rainwater in the gravel detention area underneath the pavement, increasing the usable surface and eliminating storm water drainage infrastructure. It was developed to satisfy a permeable, pervious driveway requirement while addressing LEED and National Assn. of Homebuilders green building guidelines.