Bryant/Carrier/Payne Fan Coil Filter KFAFKO312LRG (2-Pack)19 3/4" x 21 1/2" x 1" Washable Hog Hair Panel Filter - OEM - Original Factory Replacement- For models Models FV4, FK4, FC4, FB4, FA4, FH4- Blue Hog Hair style with metal frame- Package of 2 reusable filters