16x20x4 (3 5/8) Pleated MERV 13 Air Filters Number Per Box:1 This results in less flow

This results in less flow restriction and 33% more surface area for cleaner smelling air

Important Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter

Nordic Pure 16x24x2 MERV 13 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 15x20x2 MERV 7 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

16x20x4 (3 5/8) Pleated MERV 13 Air Filters Number Per Box:1 This results in less flowActual Size: 15 1 2 x 19 1 2 x 3 5 8 (15. 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 16x20x4 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) Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic