Honeywell Home AC Furnace Media Air Filter 16 x 20 x 4 MERV 11 (1 pk)

Size:1 Pack 16X20 Media Air Filter-MERV 10. Make sure this fits by entering your model number. New MERV 10 (at 492 FPM) performance with lower pressure drop at no additional cost! Efficiency ratings are based on American Society of Heating, Refrigerating and Air-Conditioning Engineers Standard 52.2 1999! Efficiency ranges are defined for small particles, E1=0.3 to 1.0 microns; medium particles, E2=1.0 to 3.0 microns; and large particles, E3=3.0 to 10.0 microns