Undergrate Catch Basin Filter

See how storm drain catch basin filters work to filter pollutants from storm water runoff. For more information on the different storm drain catch basins we offer, give our sales team a call at 863-261-8388.

Undergrate storm drain filter bags are constructed of 10 percent monofilament with an Apparent Opening Size (AOS) of 40 US Sieve and water flow rate of 145 gpm/ft². The collection area is held to the grate with sturdy webbing straps that are 1.5 inches wide. The tensile strength of the straps is 5,500 pounds, so each filter can hold a large amount of heavy debris with few problems. The catch basin sediment filter can trap leaves entering storm drains. The sturdy straps hang underneath the grate to collect debris effectively — even in heavily treed areas.

Storm drain filter bags can be custom designed to fit your city's particular storm drains. Contact us to ask about alternative fabrics and sizes.

The undergrate filter is available in several standard sizes to accomodate varying drain grate sizes. Contact us for custom sizing.

Two people can install the catch basin filter using only basic equipment; no special tools needed. The secure-connect system keeps the filter in place until it requires emptying.

1. Lift the grate on the storm drain using a grate hook or other lifting equipment.

2. Place the two main webbing straps over the ends of the grate.

3. Attach the four smaller webbing straps over the corners of the grate.

4. Replace the grate with the lifting equipment.

5. Confirm that the straps are lying flat against the grate. There should be no excess webbing above the grate.