11 3/8x11 3/8x1 Exact MERV 14 AC Furnace Filters 12 Pack Environmental Controllers Controls these bacterial & fungal

Controls these bacterial & fungal diseases: Powdery Mildew

beds and most other growing techniques

5' (45x45cm) Bloom stage and 2'x2' (60x60cm) Veg stage

along with a Nordic Pure MERV 8 rating

11 3/8x11 3/8x1 Exact MERV 14 AC Furnace Filters 12 Pack Environmental Controllers Controls these bacterial & fungalNordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.