For filter installation the air enters thru the fuzzy
Nordic Pure 16x24x2 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
to protect your HVAC unit and provide cleaner air
Nordic Pure MERV 12 is equivalent to MPR 1500-1900
With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer
20x22 1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 14x20x 1/2 For filter installation the airActual Size: 20 x 22 1 4 x 3 4 (20 x 22. 25 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 Made