6x12x1 Exact MERV 13 AC Furnace Filters 6 Pack Grow Tents We recommend that you change

We recommend that you change your air filter every 3-6 months to maintain maximum efficiency

At over 30% amino acid content by weight

- Kills and controls black mold

Suitable environments for release are gardens

and nursery crops

6x12x1 Exact MERV 13 AC Furnace Filters 6 Pack Grow Tents We recommend that you changeNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200