Curb inlet storm drains are a standard feature in modern street and sidewalk design. They not only capture downstream runoff but also direct water into the storm drain network, bioswales, flood‑control channels, and sewer systems throughout the country. Because curb inlets are built to handle heavy water flows, they naturally become major collection points for debris, trash, motor oil, diesel fuel, brake dust, and other pollutants—making regular maintenance essential.

To manage these pollutants effectively, many municipalities require curb inlet filter boxes installed at the exposed street entry. These filter boxes are designed to capture trash, prevent clogs, and hold hydrocarbon filters in place so oils and chemicals are intercepted before entering the stormwater system.

Our curb inlet filter boxes are uniquely engineered with a rear access door, unique to our product, allowing maintenance crews to clean or replace filters without removing the entire unit from the vault wall. This design significantly reduces labor time, maintenance costs, and overall service disruption compared to traditional systems.