depending on your unique home environment
Nordic Pure 12x30x1 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
MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600
Nordic Pure Custom MERV 14 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering
MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500-1900
17x25x1 MERV 12 AC Furnace Filters Air Bear depending on your unique homeActual Size: 16 1 2 x 24 1 2 x 3 4 (16. 5 x 24. 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