20x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack botanicare Special features of the E-500

Special features of the E-500 includes: the unit works in areas up to 500 cubic feet

the MERV 11 air filter should be replaced every 6 months

• Automatically controls pH direction up or down

Soil preparation is imperative when readying plants and the growing environment for the upcoming season

20x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack botanicare Special features of the E-500Nordic 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.