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 Black foam has 30 pores per inch for maximum flow. It is so coarse that we do not recommend using it alone. It is best when used as a pre-filter, or as an outer layer with a finer foam behind it. Glue the ends together using silicone adhesive. 12 inch x 24 inch x 3/8 inch sheet.
Add the Medium 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)
Red (Medium) Air Filter Foam Sheet, 40 PPI (Part No. 1265-202)
Note: The Fine and Medium foams are sold in smaller 12 x 16 inch sheets.
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).