The undergrate catch basin filter fits neatly beneath drain grates acting as a catch basin sediment filter to catch trash, dirt, and other debris. The low-profile, barely-there design of the catch basin filter allows for heavy pedestrian and vehicular traffic, including wheel turns. There are even overflow ports to prevent flooding on the streets during heavy rain events. The under grate catch basin filter can even act as a storm drain leaf guard, catching an influx of fallen leaves.
The undergrate catch basin filter has a larger collection area than traditional 'witch's hat' storm drain inserts. It is even large enough to work as a storm drain leaf guard in areas with a significant number of trees as a storm drain leaf guard. The Water Management department can even add flocculants or oil absorbents to the inlet filter bag to treat water as it flows through the stormwater drain.