21 1/2x26x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Controllers Third-party testing has demonstrated a

Third-party testing has demonstrated a yield increases between 11-30%

Measures pH and temperature

yet strong

Too high or too low

pollination

21 1/2x26x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Controllers Third-party testing has demonstrated aNordic 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.