21 1/4x21 1/4x1 Exact MERV 14 AC Furnace Filters 20x21 1/2x1 which are 1/1000 of a

which are 1/1000 of a millimeter (a human hair is about 70 microns wide)

MERV 13 Plus Carbon air filters are comparable to air filters with the MPR rating of 2200

Nordic Pure 20x25x6 Aprilaire Space-Gard 2200 Replacement Air Filters Part 201 MERV 13 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your workspace or office

Nordic Pure’s 16x25x3 MERV 8 Air Bear Cub Replacement air filter is meant to replace the air condition filter for any system that requires a 3” depth

Each Nordic Pure 1” MERV 14 air filter will capture more than 90% of 1

21 1/4x21 1/4x1 Exact MERV 14 AC Furnace Filters 20x21 1/2x1 which are 1/1000 of aActual Size: 21 1 4 x 21 1 4 x 3 4 (21. 25 x 21. 25 x 0. 75) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and removed. Ideal for customers with health problems or for commercial units which support a rating of MERV 14 and above Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 14 is equivalent to MPR 2800 Made in the USA. Nordic Pure