Unlike other A/C filters where the nominal and actual sizes differ by a fraction of an inch
this is just a list of the most well-known systems that use this size
We recommend that you change your air filter every 30-90 days to maintain maximum efficiency and indoor air quality
Actual Size: 15 1/2 x 19 1/2 x 3 5/8 (15
Nordic Pure 18x24x4 MERV 15 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home
21x21x1 MERV 14 Plus Carbon AC Furnace Filters Number Per Box:6 Unlike other A/C filters whereActual Size: 20 3 4 x 20 3 4 x 3 4 (20. 75 x 20. 75 x 0. 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 in