29x29x1 MERV 13 AC Furnace Filters Number Per Box:6 Nordic Pure 20x22x1 MERV 10

Nordic Pure 20x22x1 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

The actual width and length of the air filter should be within 1/8 of an inch-if not

We recommend that you change your air filter every 30-90 days to maintain maximum efficiency and economy

Nordic Pure 16x24x4 MERV 14 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: 21 1/2 x 25 1/2 x 3/4 (21

29x29x1 MERV 13 AC Furnace Filters Number Per Box:6 Nordic Pure 20x22x1 MERV 10Actual Size: 28 1 2 x 28 1 2 x 3 4 (28. 5 x 28. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, smog and other contaminants. Ideal for customers looking for superior filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 13 is equivalent to MPR 2200 2400 Made in the USA. Nordic Pure MERV 13 Pleated AC Furnace Air Filters