21 1/2x23x1 Exact MERV 8 AC Furnace Filters 20x25x6 Important Note: Almost ALL furnace

Important Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter

MERV 12 furnace air conditioner filters are comparable to HVAC filters with the rating of MPR 1500-1900

Each Nordic Pure 4” MERV 8 furnace air filter captures airborne particles as small as 3

Nordic Pure 16x20x5 Honeywell Replacement MERV 14 rated air filters are what is considered the traditional 5” filter at an actual 4 3/8”

please see our 16x20x5 (4 3/8 actual depth)

21 1/2x23x1 Exact MERV 8 AC Furnace Filters 20x25x6 Important Note: Almost ALL furnaceActual Size: 21 1 2 x 23 x 3 4 (21. 5 x 23 x 0. 75) Removes lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants This dust reduction air filter is ideal in keeping your AC and furnace equipment working efficiently and helps reduce odors Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 8 is equivalent to MPR 800 Made in the USA. Nordic Pure MERV 8 Pleated AC