Honeywell FC100A1011 20 x 20 x 5 inch replacement media air furnace filter – MERV 11

Size:1 Filter Honeywell says: Our filters are up to 4 times more effective and is up to 85% more efficient at capturing airborne particles compared to a standard one-inch filter. They captures both microscopic particles like dust and smoke in addition to larger contaminants such as mold spores and pet dander. Our filters last up to four times longer than a standard one-inch furnace filter. Replace them every 6-12 months versus monthly or quarterly changes. Make sure this fits by entering your model number. Fiber Imported Filter Size: 20″ x 20″ x 5″ Minimum Efficiency Reporting Value (Media Filters Only): MERV 11 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. Expected Duration: 6 to 12 months Fits Honeywell models: F25, F35, F100, F150