Air Filter Foam Sheet, Red (40 PPI Medium), 12 x 16 x 3/8
This special foam is designed and manufactured for use as a high-performance air filter medium. It is ideal for making your own filter assembly, or replacing worn-out foam from an old filter kit.
The Red foam has 40 pores per inch for coarse filtration without sacrificing flow. It makes a great free-flowing pre-filter when wrapped around an existing air filter! Glue the ends together using silicone adhesive. 12 inch x 16 inch x 3/8 inch sheet.
Add the Fine and Coarse foam (sold separately) to make your own three-stage air filter!
Green (Fine) Air Filter Foam Sheet, 65 PPI (Part No. 1265-201)
Black (Coarse) Air Filter Foam Sheet, 30 PPI (Part No. 1265-203)
For best dirt-capturing ability, we recommend treating the foam with an oil such as our Biodegradable Oil for Foam Air Filters, Part No. 3895 (sold separately).
Universal Air Filter Foam Sheet
Universal, Customizable, and Make-It-Yourself Air Filters
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