Connect with a Ferguson Waterworks Geo & Stormwater expert Connect with an expert
Get expert advice on our high-quality products.

RockIn Filter

High-Flow Geosynthetic Curb Inlet Filter

The RockIn Filter is a high-flow geosynthetic curb inlet filter. The filter is 6’ long with a 9” diameter. When the filter arrives on your job site, it is ready to fill with suitable high-flow, high-filtration media–for example, rock or mulch. The innovative design makes installation and maintenance fast and simple. Furthermore, the unit lasts for the duration of the project because it is reinforced with a heavy-duty geosynthetic grid.


The RockIn Filter is quick and easy to install. Firstly, fill the unit with the required stone. Then seal it and move the unit into place. Currently, the required fill is #57, #67, or #68 stone or DOT-approved mulch. It is important to note that the filters can be filled with any high-filtration media.


The RockIn Filter requires regular inspections to ensure ponding does not occur. Before, during, and after heavy rainfall events, be sure to check the filter. To clean the filter, clear the surrounding area with a shovel. In addition, use a broom to remove sediment that’s on the filter.

Additional Curb Inlet Filtration Products:

Connect With An Expert Today

Case Studies

From solving challenging application issues to severe weather response, there is no better partner than Ferguson Waterworks. Let our past performance speak for itself.

ferguson industrial case studies hero

Start Your Project Today