Nordic Pure 20x25x5 Honeywell Replacement MERV 13 rated air filters are what is considered the traditional 5” filter at an actual 4 3/8”
Nordic Pure 16x20x1 MERV 8 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 16x25x4 or an air filter with an MPR rating with an actual depth of 4 3/8
which is 9-gauge wire grid with a support that runs through the middle for added strength and stability
20x24x1 Furnace Air Filters MERV 10 Pleated Plus Carbon 12x25x2 Nordic Pure 20x25x5 Honeywell ReplacementActual Size: 19 1 2 x 23 1 2 x 3 4 (19. 5 x 23. 5 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