20x20x4 (3 5/8) Pleated MERV 15 Air Filters Number Per Box:2 use a tape measure to

use a tape measure to determine the exact width (short side) and exact height (long side) of your current air filter

The air conditioner filter media will not support the growth of mold or bacteria

Nordic Pure 12x18x1 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

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

20x20x4 (3 5/8) Pleated MERV 15 Air Filters Number Per Box:2 use a tape measure toActual Size: 19 1 2 x 19 1 2 x 3 5 8 (19. 5 x 19. 5 x 3. 63) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and removed. 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 Pure MERV 15+ is