17x20x1 MERV 13 Plus Carbon AC Furnace Filters 12 Pack PH/EC/TDS Meters and Solutions - 4-hour REI

- 4-hour REI

Derived from: naturally occurring endomycorrhizal fungi cultivated on host plant roots

The cleanable sediment filter is reusable

20-10-20 is fast acting in foliar sprays or liquid fertilizer injector systems

Aeromixer makes it easy

17x20x1 MERV 13 Plus Carbon AC Furnace Filters 12 Pack PH/EC/TDS Meters and Solutions - 4-hour REINordic 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.