21 1/2x24x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Lighting & Electrical Components pH stable within the ideal

pH stable within the ideal range for nutrient uptake

and manure areas

Filling reservoirs for compost teas and microbial inoculants sensitive to chlorine and chloramines

Microporous

Nordic Pure chose to follow the industry standard

21 1/2x24x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Lighting & Electrical Components pH stable within the idealNordic 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.