20x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 12 Pack Ventilation/Air Conditioning and the rounded square shape

and the rounded square shape makes these great for stacking large quantities

Take-All Patch

The microbial mixture in ROOT helps plants:

Note: Before measuring

20x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 12 Pack Ventilation/Air Conditioning and the rounded square shapeNordic 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.