these cultures promote the growth of naturally-occurring beneficial microorganisms
Nordic Pure 16x24x4 Pleated Air Filters MERV 13 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home
use a tape measure to determine the exact width (short side) and exact height (long side) of your current air filter
non-woven fabric
1 interchangeable insert included
18x25x1 Pleated MERV 14 Air Filters 3 Pack complete-systems these cultures promote the growthNordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.