20x24x4 (3 5/8) Pleated MERV 14 Air Filters (3 5/8) HVAC systems should be rated

HVAC systems should be rated to handle filters of MERV 15 and above

Nordic Pure 15x20x1 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

Nordic Pure 20x25x4 Plus Carbon Air Filters MERV 13 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

MERV 12 furnace air condition filters are comparable to HVAC filters with the rating of MPR 1500-1900

Actual Size: 17 3/4 x 17 3/4 x 1 3/4 (17

20x24x4 (3 5/8) Pleated MERV 14 Air Filters (3 5/8) HVAC systems should be ratedActual Size: 19 3 8 x 23 3 8 x 3 5 8 (19. 38 x 23. 38 x 3. 63) 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