Filterbuy 20x25x5 Air Filter MERV 13 Optimal Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches) - Amazon.com
PUREFLOW, Home Furnace Air Filter 20x25x5, with 4 Layers of Advanced F – PUREFLOW AIR