With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer
Nordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments
Actual Size: 12_1/2 x 21 x 3/4 (12
Nordic Pure 16x25x4 Plus Carbon Air Filters MERV 13 are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home
16x18x1 MERV 13 Plus Carbon AC Furnace Filters 8 1/2x30x1 With the 4" and 5"Actual Size: 15 3 4 x 17 3 4 x 3 4 (15. 75 x 17. 75 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