21 1/4x21 1/4x1 Exact MERV 14 AC Furnace Filters 20x21 1/2x1 With its two layers

With its two layers

Nordic Pure 20x20x4 Pleated Air Filters MERV 8 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home

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

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

Nordic Pure 15x20x2 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

21 1/4x21 1/4x1 Exact MERV 14 AC Furnace Filters 20x21 1/2x1 With its two layersActual 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