it is important to regularly change your AC filter
We recommend changing your HVAC furnace filter every 1-3 months
MERV 13 furnace air conditioner filters are comparable to HVAC filters with the rating of MPR 2200-2400
AC and heater window units
Nordic Pure 12x24x4 Pleated Air Filters MERV 7 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home
12 3/4x20 3/4x1 Exact MERV 12 AC Furnace Filters 12x12x1 it is important to regularlyActual Size: 12_3 4 x 20_3 4 x 3 4 (12. 75 x 20. 75 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