Honeywell Home 20" x 12.5" Media Air Filter

**Image may not represent actual product** New MERV 11 (at 492 FPM) performance with lower pressure drop at no additional cost. Specifications Application: Replacement Filter Efficiency Standard: Efficiency ratings are based on American Society of Heating, Refrigerating and Air-Conditioning Engineers Standard 52.2-1999. Efficiency Standard: 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. Fractional Efficiency: E1=25%, E2=62%, E3=85% Minimum Efficiency Reporting Value (Media Filters Only): MERV 11 Static Pressure Drop (in. w.c.): 0.23 at 500 FPM,li>used with: Honeywell F27F10570 Features 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.