Nordic Pure chose to follow the industry standard
Nordic Pure 16x25x5 Honeywell Replacement MERV 8 rated air filters are what is considered the traditional 5” filter at an actual 4 3/8”
Nordic Pure 16x24x4 Pleated Air Filters MERV 7 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home
Nordic Pure 16x25x5 1/4 Goodman/Carrier/Amana Replacement MERV 8 air filters are unique because of the actual size of the filter compared to the nominal size
16x21x1 MERV 13 Plus Carbon AC Furnace Filters 3 Inch Nordic Pure chose to followActual Size: 15 1 2 x 20 1 2 x 3 4 (15. 5 x 20. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, smog, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. Ideal for customers looking for superior filtration but needing an odor control element Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 13 is equivalent to MPR 2200 2400