No matter the name of the rating
the efficiency of all air filters is rated according to the same criteria as set forth by ASHRAE
Actual Size: 11 1/2 x 11 1/2 x 1/2 (11
Nordic Pure 16x24x1 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
the material is electrostatically charged to attract unwanted particles
18x24x2 Pleated Air Filters MERV 14 Plus Carbon 14x24x1 No matter the name ofActual Size: 17 3 8 x 23 3 8 x 1 3 4 (17. 38 x 23. 38 x 1. 75) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and helps 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 14 is equivalent to MPR 2800 Made