MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600
Nordic Pure 12x18x1 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
HVAC systems should be rated to handle filters of MERV 14 and above
Nordic Pure 12x20x2 MERV 13 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
13x20x1 Exact MERV 13 Plus Carbon AC Furnace Filters Number Per Box:6 MERV 7 furnace filters areActual Size: 13 x 20 x 3 4 (13 x 20 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 in the