Particles in indoor air are measured in microns
We recommend that you change your air filter every 30-90 days to maintain maximum efficiency and indoor air quality
All Nordic Pure + carbon pleated air filters are manufactured using a heavy duty
Actual Size: 9 x 27 x 3/4 (9 x 27 x 0
Nordic Pure 12x25x2 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer
20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters Furnace Filters Particles in indoor air areActual Size: 19 5 8 x 19 7 8 x 4 3 8 (19. 63 x 19. 88 x 4. 38) Removes lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants Replaces Honeywell 20x20x4 and filters with an MPR rating with an actual depth of 4 3 8 and ideal for helping keep equipment working efficiently and reducing odors Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 8 is equivalent to MPR