Installed Drain Guard inserts in all 12 of our parking lot catch basins. After the first rain event we could already see oil and sediment captured in the filters. Our stormwater sampling results improved dramatically — well within permit limits now.
Oil & Sediment Insert - Storm Drain Guard 60x60x18
★★★★★ 5.0 out of 4 reviews · Google Reviews- Absorbs up to 1.55 gallons of oil —plus traps sediment & suspended solids
- Drop-in installation — no tools, adhesives or modifications required
- 24/7 passive treatment — filters every rain event without crew intervention
- NPDES & SWPPP compliant — recognized Best Management Practice (BMP)
- FREE Shipping — ships to the Continental US
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Technical Specifications
| AbsorbentsOnline SKU | A9356U |
|---|---|
| Product Type | Storm Drain Guard —Oil & Sediment Insert |
| Filter Media | Lipophilic oil-absorbing media |
| Oil Absorption | Up to 1.55 gallons |
| Installation | Drop-in — No tools or modifications required |
| Compliance | NPDES Stormwater · SWPPP BMPs · Clean Water Act |
| Manufacturer | UltraTech |
| Shipping | FREE — Continental US |
| Lead Time | 3–7 Business Days |
Expert Insights
With 40+ years of industrial supply experience, AbsorbentsOnline recommends Drain Guard filter inserts as a foundational best management practice (BMP) for any facility subject to NPDES stormwater permits. Unlike reactive spill response measures, Drain Guards provide 24/7 passive treatment — filtering oil, sediment, and debris from every rain event without crew intervention.
The Oil & Sediment insert targets the two most common stormwater pollutants — petroleum hydrocarbons and suspended solids. A single insert provides continuous protection between scheduled maintenance intervals.
💡 Pro Tip: Inspect Drain Guard inserts quarterly and after major storm events. Replace oil-absorbing media when saturated (media changes color from white to dark). Keep spare inserts in your stormwater BMP stockroom so replacements happen same-day. Document every inspection and replacement in your SWPPP records — inspectors look for this during audits.
Oil & Sediment Insert - Storm Drain Guard 60x60x18 | Storm Drain Guard Filter Insert
Why Drain Guard Inserts Are Essential
NPDES stormwater permits require industrial facilities and construction sites to implement Best Management Practices (BMPs) that prevent pollutants from reaching the storm sewer system. Drain Guard filter inserts provide 24/7 passive stormwater treatment — capturing oil, sediment, and debris during every rain event without crew intervention.The Oil & Sediment model provides dual-action filtration — absorbing petroleum hydrocarbons while trapping suspended sediment.
Who Buys Drain Guard Inserts
Stormwater program managers, environmental compliance officers, municipal public works departments, construction site managers, property management companies, airport operations teams, fleet maintenance supervisors, and facility engineers. Required under NPDES industrial stormwater permits, construction general permits, and MS4 municipal stormwater programs.
Purchased by stormwater coordinators, environmental compliance managers, public works supervisors, construction managers, and facility engineers. All products backed by AbsorbentsOnline’s 40+ years of industrial safety expertise.
Frequently Asked Questions
How does the Drain Guard filter insert work?
The insert drops directly into the storm drain catch basin frame. As stormwater enters the drain, it passes through the lipophilic oil-absorbing media which selectively captures petroleum hydrocarbons, while a sediment filter layer traps silt and suspended solids. Clean water continues through to the storm sewer system.
Does it require any tools or modifications to install?
No. The Drain Guard insert is designed for drop-in installation — simply lift the drain grate, place the insert into the catch basin frame, and replace the grate. No tools, adhesives, drilling, or modifications to the existing drain structure are required. One person can install it in under 60 seconds.
How often should I replace the filter insert?
Replace the oil-absorbing media when it becomes saturated — the media will darken noticeably as it absorbs hydrocarbons. Typical replacement intervals are quarterly under normal conditions, though high-exposure areas (fueling zones, vehicle maintenance bays) may require more frequent replacement. Also inspect and replace after significant storm events. Document every replacement in your SWPPP records.
What regulations require storm drain filter inserts?
Drain Guard inserts are a recognized Best Management Practice (BMP) under NPDES stormwater permits, SWPPP plans, and Clean Water Act requirements. They satisfy structural BMP requirements for industrial stormwater permits, construction general permits (CGP), and MS4 municipal stormwater programs. Many state and local stormwater programs specifically reference drain inlet protection as a required control measure.
What Our Customers Say
Real reviews from the facilities, field crews, and agencies that count on us.
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We manage stormwater for a 40-acre industrial campus and these inserts cut our maintenance time in half. Drop-in installation, easy to inspect, and the oil absorption performance is exactly what we needed to stay compliant with our multi-sector general permit.
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Our construction site CGP required inlet protection on every catch basin. These Drain Guard inserts met the requirement perfectly and the inspector approved them on first review. Installation took our crew 10 minutes for all six drains. Will order again for our next project.
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Cross-Reference Guide
This product is compatible with applications that use the following part numbers:
- A9356U
- UltraTech 9164
- New Pig DRM453
- ENPAC 4330-OS
Oil & Sediment Insert - Storm Drain Guard 60x60x18 storm drain guard filter insert catch basin BMP stormwater treatment. UltraTech Drain Guard comparable. New Pig drain filter comparable. ENPAC inlet protection comparable. NPDES SWPPP stormwater best management practice.AbsorbentsOnline SKU: A9356U.

