BlackHawk Advanced Inlet Filter Mat
Lightweight with virtually unlimited capacity, Blackhawk Inlet Filter Mat installs in seconds and stops sediment and debris from invading inlets during and after construction.
Silt sacks have limited sediment storage capacity and can easily blind whereby causing street flooding. BlackHawk™ has a much higher sediment storage capacity because sediment is kept above the grate. It’s unique design – vertically oriented coir fibers, scalloped edging, hi-flow holes, and emergency dewatering plugs, make this device the most robust in it’s class.
BlackHawk™ is held to the grate with high-strength rubberized magnets so installation, servicing, and removal is a snap – no skid steer or backhoe needed. This device can be cleaned and re-used multiple times.
BlackHawk Inlet Filter Mat vs. Inlet Filter Bags
BlackHawk reduces inlet filter installation and maintenance costs by 50% compared to silt sacs or bags. No heavy equipment or lifting of grates – one man job. And BlackHawk is 100% surface visible enabling car window inspections.
- 1300 GPM hydraulic flow rating (2×4 grate version)
- Removes 99% .425 mm particle size and larger
- Independent testing shows 87% overall sediment removal
- Works with both Type-M and Type-C inlet configurations
- Mats for 2×2, 2×3, and 2×4 grates are in stock
- Easily cut to size
Why Choose BlackHawk?
BlackHawk is designed to resist blinding and prevent street flooding, providing virtually unlimited sediment storage capacity.
Installs in Seconds
Simply lay it on the grate — industrial-strength magnets hold it in place with no tools or hardware.
Resists Blinding & Flooding
Engineered to stay permeable under load, with integrated emergency dewatering plugs to prevent street flooding.
More Storage Than Bags
Far higher sediment storage capacity than inlet bags, so it works longer between cleanouts.
Clean and Reuse
Can be cleaned and reused multiple times, and works for both E&S and MS-4 compliance.
Blackhawk Drawing
BlackHawk’s patent pending vertical fiber orientation creates an excellent combination of hydraulic flow and sediment removal. The Pennsylvania Department of Environmental Protection (PA DEP) added the BlackHawk Inlet Filter Mat to their Approved Technologies List in April 2016.
Frequently Asked Questions
The BlackHawk Inlet Filter Mat is a sediment control device designed to prevent sediment, debris, and runoff from entering stormwater inlets during and after construction. It is lightweight, installs quickly, and helps protect waterways while reducing inlet maintenance.
BlackHawk uses vertically oriented coir fibers, high-flow openings, scalloped edges, and emergency dewatering plugs to capture sediment while allowing water to pass through. The mat sits over the grate, keeping sediment above the inlet surface and reducing clogging risk.
- Up to approximately 50% reduction in installation and maintenance costs
- No heavy machinery required—one person can install or remove
- Higher sediment storage capacity with reduced flooding risk
- Easy visual inspection from street level
BlackHawk mats are available for common grate sizes including 2×2, 2×3, and 2×4. They are compatible with both Type M and Type C inlet configurations and can be trimmed to fit non-standard openings.
The BlackHawk mat has a hydraulic flow rating of up to 1,300 gallons per minute (GPM) for the 2×4 grate size.
Independent testing shows approximately 87% overall sediment removal and up to 99% removal of particles 0.425 mm and larger.
Yes. BlackHawk mats can be cleaned and reused multiple times, making them more cost-effective and environmentally responsible than disposable filter bags.
BlackHawk is constructed from natural coconut coir fibers and includes integrated industrial-strength magnets to secure the mat to the grate. Some configurations also feature emergency dewatering plugs and scalloped edges.
No. BlackHawk installs easily by hand, with industrial-strength magnets holding it securely in place on the grate.
Yes. BlackHawk supports erosion and sediment (E&S) control and MS4 stormwater compliance efforts on construction sites.
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All statements, product characteristics, and performance data contained herein are believed to be reliable based on observation and testing, but no representations, guarantees, or warranties of any kind are made as to accuracy, suitability for particular applications, or the results to be obtained. Nothing contained herein is to be considered to be permission or a recommendation to use any proprietary process or technology without permission of the owner. No warranty of any kind, expressed or implied, is made or intended. EnviroSoxx®, Filtrexx®, Filtrexx SiltSoxx®, GreenLoxx®, GroSoxx®, Powered by Filtrexx®, Siltron®, Storm Catcher®, StormExx®, Straw Max®, Switch Sock®, the branch & leaf logo®, and the color GREEN® are Registered Trademarks of MKB Company. DiversionSoxx™, FilterMedia™, GrowingMedia™, and SwitchSoxx™, are Trademarks of MKB Company. US Patents 7,226,240; 7,452,165; 8,439,607; 8,740,503; 10,167,620; 10,704,247; 11,098,472; 11,466,413 and Patents Pending 63/221,435; 62/964,021; 18/114,601; 62/349,890; 17/459,534; 63/070,891 may apply.