22x22x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hw When used as a foliar

When used as a foliar or root drench

and trellises

Encourages larger

a naturally occurring biocide

Use this tester for either cup-style or dip-style measurements

22x22x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hw When used as a foliarNordic 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.