Uni Air Filter BF-5 Foam Sheet, Part #230-37

Uni Filter Replacement Red Mesh Course Foam Air Filter - Sheet Size 12 X 16 X 3/8 - 40 PPI Red Coarse Foam. Item Number: BF-5. Foam Piece: 16 x 12. 40 PPI (pores per inch). Easy To Use: Place your existing filter on top of foam trace it out and then cut it out with scissors. Made in America.