the efficiency of all air filters is rated according to the same criteria as set forth by ASHRAE
The sturdy one piece frame and extra material makes it a high capacity filter which really enhances it’s performance
Nordic Pure 20x24x2 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
with a metal mesh support grid
Nordic Pure 18x24x2 MERV 14 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
26x30x1 MERV 7 Plus Carbon AC Furnace Filters 20x20x2 the efficiency of all airActual Size: 25 1 2 x 29 1 2 x 3 4 (25. 5 x 29. 5 x 0. 75) Captures large airborne particles like lint, household dust, pollen, dust mites, mold spores and other contaminants. This dust reduction air filter is ideal in keeping your AC and furnace equipment working efficiently and helps reduce odors Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 7 is equivalent to MPR 600 Made in the USA.