Nordic Pure 20x24x4 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home
Actual Size: 19 1/2 x 23 1/2 x 1/2 (19
the efficiency of all air filters is rated according to the same criteria as set forth by ASHRAE
Each Nordic Pure 1” MERV 13 air filter will capture more than 90% of 1
21x22x1 MERV 14 AC Furnace Filters 15x30 3/4x1 Nordic Pure 20x24x4 MERV 13Actual Size: 20 1 2 x 21 1 2 x 3 4 (20. 5 x 21. 5 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 MERV