20x21 1/2x1 Exact MERV 12 AC Furnace Filters Number Per Box:6 Nordic Pure 12x24x4 MERV 15

Nordic Pure 12x24x4 MERV 15 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

Nordic Pure 18x20x1 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

Nordic Pure 18x18x1 MERV 7 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

The effective life of your AC air filter depends on both the inside and outside conditions in which you live

Nordic Pure 20x24x1 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

20x21 1/2x1 Exact MERV 12 AC Furnace Filters Number Per Box:6 Nordic Pure 12x24x4 MERV 15Actual Size: 20 x 21 1 2 x 3 4 (20 x 21. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500 1900 Made in the USA. Nordic Pure MERV