25x30x1 MERV 10 Plus Carbon AC Furnace Filters Number Per Box:6 With the 4" and 5"

With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer

Nordic Pure 10x20x2 MERV 7 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

Actual Size: 24 1/2 x 27 1/2 x 3/4 (24

a 5” filter is actually a fraction of an inch smaller

Nordic Pure 18x18x1 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

25x30x1 MERV 10 Plus Carbon AC Furnace Filters Number Per Box:6 With the 4" and 5"Actual Size: 24 3 4 x 29 3 4 x 3 4 (24. 75 x 29. 75 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