20x20x9 K-Pak Single-Ply Filter20x20x9 K-Pak Single-Ply Filter $51.28 SKU: KPK20209O Back $51.28 Quantity -+ Add to Cart Details 20x20x9 K-Pak Single-Ply Filter DetailsBackDetails20x20x9 K-Pak Single-Ply FilterSee MoreSee Less