PIG® Frameless Storm Drain Filter for Small Drains

For Fuels; Oil; Sediment; Debris For Storm Drains 9" to 20" W & 9" to 20" L; Round Drains 9" to 20" Dia. Trim to Fit

Catch basin insert protects small drains in high-traffic areas while filtering oil, sediment, debris and trash from stormwater runoff.
Read More >

Risk-Free Guarantee

PRICING (Based on quantity)

1 - 4


5 +

(Best Value)

Get a Free Gift with every delivery! 
Learn More



Catch basin insert protects small drains in high-traffic areas while filtering oil, sediment, debris and trash from stormwater runoff.

  • Designed for superior filtration and easy handling
  • Frameless design is ideal for small drains of any shape that don't work with our Adjustable Frame Storm Drain Filter or Catch Basin Insert Filtration System
  • Heavy-duty, high-visibility strap allows easier handling and removal
  • Treats more water and removes more oil than basic storm drain filters; accumulation pocket fits shallow drains to hold sediment, debris and trash
  • Four-stage filtration: PET construction removes contaminants from stormwater at multiple stages, increasing the amount of pollutants captured
  • Stormwater flows through drain grate onto fabric shelf (Stage 1), passes over filter ring (Stage 2) into collection bag (Stage 3) and over four sets of filter strips (Stage 4)
  • Patented filter ring channels water to center of collection bag to prevent untreated water from escaping through overflow ports
  • Filter strips float freely like tentacles to remove hydrocarbons as water moves through collection bag
  • Overflow ports help prevent blockage during high water flow
  • Affordably priced so you can protect more drains at your facility; no need to pick and choose which ones you can afford to safeguard
  • Fits circular drain sizes 9" to 20" in diameter
  • Fits irregular, rectangular and square drain sizes 9" to 20" width to 9" to 20" length
  • Trim to allow 3" of material to extend above grate
  • Pore size is 0.074 mm, 74 microns, 0.0029 inches or 200 sieve
Get the stuff you use most, right when you need it, shipped automatically.

Absorbency Range 0 - 0.9 gal.
Style Inside the Drain
Use With Storm Drains 9" to 20" W & 9" to 20" L; Round Drains 9" to 20" Dia.
Dimensions 26" W x 26" L x 10" H
Absorbency Up to .5 gal.
Application Disposable
Color Black
Brand PIG
Drain Shape Round; Square; Rectangular
Max Flow Rate 200 gal./Minute
Opening Dimensions 10" Dia.
Special Feature Trim to Fit
Substance Filtered Fuels; Oil; Sediment; Debris
UV Resistant Yes
Sold as 1 each
Weight .57 lbs.
# per Pallet 960
Composition Insert Strips and Ring: PET
Straps: PET
UNSPSC 47101514
Pigalog® Page Number Page 171

  • Product Data Sheet (PDS)
  • 40 CFR 122.26
    When applying for a National Pollutant Discharge Elimination System (NPDES) permit, facilities must have a plan in place that describes actions, procedures, control techniques, management practices and equipment available to prevent illegal discharge of pollutants into waterways.


1 2 3 4 5
  • star star star star star By robb 03/22/2023

    Great Product

    "We have purchased these drain covers for 2 years now and they have helped tremendously, by keeping oil and debris out of the drains. The side effect of using these is that our sump pump takes less abuse now that there is no debris getting caught up in them a must for any business"

  • star star star star star By Matthew 02/16/2023

    Great for 18" yard drains!

    "My subsurface infiltration bed has two 18" circular yard drains, and the metal storm grates that go overtop do not even attempt to filter anything out... which is where this frameless storm drain filter comes in! No more placing geotextile fabric under the grates and then hoping it doesn't fall down when trying to clean it out, this has a handle that I've tied off onto the grate... which makes it much more convenient and safe for major runoff event inspection and maintenance."

Sign Up for PIG Deals

Score incredible offers, insightful info, cool promos, handy tips and more!

Thank You!

You're signed up! Keep an eye out for exclusive promos sent to your inbox.

Contact Us