23 1/2x25x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack water-pumps-&-irrigation-supplies has standard 1” NPT plumbing

has standard 1” NPT plumbing connections

20 times the B1 of other PK boosters plus serious amounts of B2

reducing disease pressure without chemical inputs

such as in wastewater

23 1/2x25x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack water-pumps-&-irrigation-supplies has standard 1” NPT plumbingNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.