20x20x4 (3 5/8) Pleated MERV 13 Air Filters Number Per Box:6 Nordic Pure 12x12x1 MERV 12

Nordic Pure 12x12x1 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

Nordic Pure 14x25x2 MERV 14 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

Nordic Pure 14x30x1 MERV 14 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

We recommend that you change your air filter every 3-6 months to maintain maximum efficiency and economy

Nordic Pure 20x20x5 Air Bear Replacement MERV 13 air filters measure an actual depth of 4 15/16"

20x20x4 (3 5/8) Pleated MERV 13 Air Filters Number Per Box:6 Nordic Pure 12x12x1 MERV 12Actual Size: 19 1 2 x 19 1 2 x 3 5 8 (19. 5 x 19. 5 x 3. 63) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, smog and other contaminants. If you are replacing a Honeywell or Lennox 20x20x4 or an air filter with an MPR rating with an actual depth of 4 3 8, please see our 20x20x5 (4 3 8 actual depth) Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic