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).