21x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack double-ended Derived from the best quality

Derived from the best quality high-nitrogen bat guano available

The large surface area gives the T2 leaf collector unsurpassed reliability

The best buffered coco on the market with a very low EC and is RHP for Horticulture certified

Reducing energy consumption is great for the planet and your pocket

21x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack double-ended Derived from the best qualityNordic 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.