11 1/4x19 1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack pots-and-containers it nurtures a "green up"

it nurtures a "green up" effect which keeps leaves strong and lush

S3 and S4 contains one fan

Dyna-ZYME works in conjunction with mycorrhizae and beneficial bacteria to break down nutrients

• Formulated for all hydroponics and soil applications

various trees

11 1/4x19 1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack pots-and-containers it nurtures a "green up"Nordic 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.