16x21x1 MERV 13 Plus Carbon AC Furnace Filters 3 Inch polyester filter material which acts

polyester filter material which acts as a pre-filter

this double-media half inch air filter is even more effective than a half inch pleated air filter

If you are replacing a Honeywell or Lennox 16x20x4 Plus Carbon or an air filter with an MPR rating with an actual depth of 4 3/8

Nordic Pure chose to follow the industry standard

Ideal for customers looking for superior filtration

16x21x1 MERV 13 Plus Carbon AC Furnace Filters 3 Inch polyester filter material which actsActual Size: 15 1 2 x 20 1 2 x 3 4 (15. 5 x 20. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, smog, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. Ideal for customers looking for superior filtration but needing an odor control element Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 13 is equivalent to MPR 2200 2400