20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon Number Per Box:1 MERV 13 furnace filters are

MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200-2400

If you are replacing a Honeywell or Lennox 16x25x4 Plus Carbon or an air filter with an MPR rating with an actual depth of 4 3/8

please see our 16x20x5 (4 3/8 actual depth)

Nordic Pure 18x24x4 Pleated Air Filters MERV 8 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home

20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon Number Per Box:1 MERV 13 furnace filters areActual Size: 19 1 2 x 24 1 2 x 3 5 8 (19. 5 x 24. 5 x 3. 63) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, smog, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. If you are replacing a Honeywell or Lennox 20x25x4 Plus Carbon or an air filter with an MPR rating with an actual depth of 4 3 8, please see our 20x25x5 (4 3 8 actual depth) Hypoallergenic, antimicrobial, and electrostatic