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The Grate Inlet Filter and the GISB-MF model (with media) stormwater filters are advanced level filtration devices. Each is highly durable and long lasting filters designed to catch large amounts of sediment, debris, and enhanced models further increase removal efficiencies.

green-arrowBypass Flow

yellow-arrowTreatment Flow


The GISB (Grate Inlet Filter) has been successfully used on numerous new construction and retrofit projects. The system’s superior durability and customization make it ideal for a wide range of stormwater applications:
Parking Lots | Roadways | Bioswale Bypass Structures.


GISB Filter

TSS Removal 86%
Oils & Grease Removal 54%
Phosphorus Removal 71%
Nitrogen Removal 60%

GISB Media Filter

Fine TSS Removal 85%
Dissolved Phosphorus Removal 69%
Copper Removal 95%
Lead Removal 87%
Zinc Removal 95%
Fecal Coliform (Bacteria) Removal 68%
Oils & Grease Removal 95%

Maintenance & Installation

Maintenance on this GISB can either be done with a shovel, a small shop vac or a standard vacuum truck. Since Bio Clean filters contain no fabrics or netting there is no chance of accidental tearing or breakage during cleaning.


1. Remove Grates. Access Filter.


2. Remove Skimmer Tray. Vacuum Debris.


3. Remove Old Hydrocarbon Boom with a New One.


4. Replace Skimmer Tray & Grates.

Pricing Stage

Request a Quote

Design Stage

Design Request

Project Profiles

Get clear examples of how this stormwater product will perform in the field and meet immediate engineering challenges, stormwater needs and regulations. Here are Bio Clean stories.

  • Pathway to the Pacific, Stormwater Project

    Pathway to the Pacific, Stormwater Project

    Our Watersheds: Pathway to the Pacific Opened as part of the Aquarium of the Pacific in Long Beach, California. This exhibit, reflecting the Aquarium’s largest addition since the Shark Lagoon, gives visitors the opportunity to [Read more]