21 1/4x21 1/4x1 Exact MERV 14 AC Furnace Filters 20x21 1/2x1 Actual Size: 11 3/4 x

Actual Size: 11 3/4 x 11 3/4 x 3/4 (11

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

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

The effective life of your air filter depends on both the inside and outside conditions of the environment in which the filter is being used

Nordic Pure 12x20x2 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

21 1/4x21 1/4x1 Exact MERV 14 AC Furnace Filters 20x21 1/2x1 Actual Size: 11 3/4 xActual 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