18x22x1 MERV 14 AC Furnace Filters 12 Pack Growing Accessories greatly reducing the risk of

greatly reducing the risk of phytotoxic effects

Displays time left in cycle

- GeoPot fabric pots’ breathable fabric allows for superior drainage and aeration of your root-zone

RootShield WP blocks and actively attacks pathogens by releasing enzymes that dissolve the cell wall of pathogens after which the Trichoderma "eats" them

4" x 10'' Standard Carbon Air Filter

18x22x1 MERV 14 AC Furnace Filters 12 Pack Growing Accessories greatly reducing the risk ofNordic 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.