HDX 20 in. x 25 in. x 4 in. Honeywell Replacement Pleated Air Filter FPR 9, MERV 13 HDX-HW2025-13-3 - The Home Depot
Amazon.com: BestAir HW2025-13R AC Furnace Air Filter, 20" x 25" x 4", MERV 13, Removes Allergens & Contaminants, Fits 100%, For Honeywell Models, Pack of 3 : Tools & Home Improvement
Amazon.com: Honeywell FC200E1029 16 X 25 Media Air Filter (MERV 13) 2 Pack : Tools & Home Improvement