Each time air passes through our high efficiency activated carbon AC filter
Nordic Pure 14x24x1 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer
Nordic Pure 18x25x2 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
we recommend that you change your air filter every 3-6 months to maintain maximum efficiency and economy
20x25x5 (4 3/8) Lennox X6673 X6675 Replacement MERV 12 Air Filters 20x20x 1/2 Each time air passes throughActual Size: 19 3 4 x 24 3 4 x 4 3 8 (19. 75 x 24. 75 x 4. 38) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. This item is made to replace the Lennox X6673 and X6675 media air filters and ideal for high efficiency air filtration and those with moderate allergies Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12