Honeywell POPUP2025 (2-Pack) - 20" x 25" POPUP Media Air Filter, MERV 11

Replacement filter Dimensions: 20"x 25", 508 mm x 635 mm MERV 11 air filter is made for use with Honeywell 20X25 F100 and F200 media air cleaners Does not work with 25x20 or 25x22 media air cleaners Type of air cleaner: media air cleaner Efficiency standard: 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 part Minimum efficiency reporting value (media filters only): MERV 11