8_1/2x30x1 Exact MERV 12 AC Furnace Filters 6 Pack Steel stake Nordic Pure 20x25x4 Plus Carbon

Nordic Pure 20x25x4 Plus Carbon Air Filters MERV 12 are made of a dual material where the MERV rated material has been fused together with a carbon layer

and the correlating Matrix Circulator

Not only will they produce more

pH buffering

8_1/2x30x1 Exact MERV 12 AC Furnace Filters 6 Pack Steel stake Nordic Pure 20x25x4 Plus CarbonNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different