18x27x1 MERV 12 Plus Carbon AC Furnace Filters Number Per Box:6 Each Nordic Pure 4” MERV

Each Nordic Pure 4” MERV 8 furnace air filter captures airborne particles as small as 3

2 or 3 A/C air filter frames

Each Nordic Pure 4” MERV 13 air filter will capture more than 90% of 1

Nordic Pure MERV 15 air filters work great in newer

18x27x1 MERV 12 Plus Carbon AC Furnace Filters Number Per Box:6 Each Nordic Pure 4” MERVActual Size: 17 1 2 x 26 1 2 x 3 4 (17. 5 x 26. 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 12 is equivalent to MPR 1500