21x23x1 Exact MERV 10 Plus Carbon AC Furnace Filters Number Per Box:6 Each Nordic Pure 4” MERV

Each Nordic Pure 4” MERV 7 air filter captures airborne particles as small as 3

Nordic Pure 10x30x1 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

Nordic Pure 10x24x1 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

If you are replacing a Honeywell or Lennox 16x20x4 or an air filter with an MPR rating with an actual depth of 4 3/8

21x23x1 Exact MERV 10 Plus Carbon AC Furnace Filters Number Per Box:6 Each Nordic Pure 4” MERVActual Size: 21 x 23 x 3 4 (21 x 23 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. Ideal for customers who not only need odor control but whose daily life demands high filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 10 is equivalent to MPR 1000 Made in the USA.