20x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack spl_cg Built-in pre-filter

Built-in pre-filter

Compatible with high frequency electronic ballasts

For growers: Use in pre- and post- grading coolers for maximum water uptake

quicker results

providing your plants with the 17 essential nutrients

20x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack spl_cg Built-in pre-filterNordic 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.