20x21x1 Exact MERV 13 AC Furnace Filters 6 Pack water-filtration Compatible with Beauveria bassiana products

Compatible with Beauveria bassiana products

and is suitable for all plants

Increase porosity in growing media allowing more air flow and drainage

These sleeves are ideal for nonhazardous work environments where you need reliable liquid and particulate protection

same upgradeable feature like Hydro-X gives you the ability for life-time

20x21x1 Exact MERV 13 AC Furnace Filters 6 Pack water-filtration Compatible with Beauveria bassiana productsNordic 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