United Storm Water's DrainPacs™ are custom-designed and fabricated from high quality materials to meet individual customer requirements. These multi-layer filtration devices are installed in a manner that does not interfere with lateral line water flow. Two commonly used DrainPac™ configurations treat urban runoff that enters drop inlets and curb inlets. Regardless of the DrainPac™ configuration that is designed and fabricated for your facility, all of United's storm drain filter inserts are made from the same materials as specified below.
The drop inlet DrainPac™ is designed for drop inlet type storm drains. They are installed in a self-supported configuration on the lip of the catch basin underneath the traffic grate.Drop Inlet DrainPac™ Drawing Download (PDF)
The curb inlet DrainPac™ is designed for catch basins. It is mounted on the forward inner wall of curb inlets beneath the curb opening.Curb Inlet DrainPac™ Drawing Download (PDF)