We recommend that you change your air filter every 30-90 days to maintain maximum efficiency and indoor air quality
a 20x30x1 air filter is actually 19 ½ x 29 ½ x ¾
Nordic Pure 10x20x1 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
odor eliminator Pure Carbon AC furnace filters can be used in residents as a stand-alone filter
10x20x1 Pleated MERV 12 Air Filters Number Per Box:24 We recommend that you changeActual Size: 9 1 2 x 19 1 2 x 3 4 (9. 5 x 19. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500 1900 Made in the USA. Nordic Pure