Honeywell FR8000A2020 - 20" x 20" x 4" TrueCLEAN Replacement Filter

Nominal Filter Size: 20x20x4 Actual Filter Size: 20-7/8" x 21-1/2" x 3-9/16" This filter fits: Honeywell Home FH8000A2020 Replace the Honeywell air filter every 6 to 12 months.