The Storm Drain Grate Guard is a simple, effective solution for capturing sediment, silt, debris, and oil before they enter storm drains and local waterways. Designed for use with flat grate catch basins, this grate guard installs quickly by sliding directly over the drain grate and securing in place with heavy-duty hook-and-loop fasteners. It allows stormwater runoff to flow freely while filtering out pollutants at the source.

Available in standard and custom sizes, the grate guard helps facilities manage stormwater runoff and support compliance with NPDES, 40 CFR 122.26, and TMDL requirements. Ideal for industrial sites, parking lots, construction areas, and municipal applications, this reusable solution reduces environmental impact while maintaining proper drainage.

Key Features & Benefits

• Sediment & Debris Control – Captures silt, sediment, trash, and oil before entering drains

• Fits Flat Grate Catch Basins – Slides easily over existing storm drain grates

• Secure Hook-and-Loop Closure – Heavy-duty fasteners keep guard closed during runoff

• Unrestricted Water Flow – Allows runoff to pass while blocking pollutants

• Standard & Custom Sizes – Available to fit a wide range of drain dimensions

• Stormwater Compliance Support – Helps meet NPDES, 40 CFR 122.26, and TMDL requirements

• Reusable Design – Easy to remove, clean, and reinstall

• Overflows Vs. No Overflows: Overflows include a built-in outlet that allows excess liquid—typically rainwater—to drain once it reaches a set level, making them ideal for outdoor containment where rainfall is expected. No overflow models are fully sealed with no outlet, designed to hold all liquids and are best suited for indoor or zero-discharge applications where any release must be prevented.