13 15/16 x 29 15/16 x 3/4 (13.94 x 29.94 x 0.75) Pleated MERV 13 Air Filters 3 Pack water-filtration then harmlessly converts to CO2

then harmlessly converts to CO2 and oxygen

We've seen a dramatic reduction in gray mold pressure in our greenhouse tomatoes since we started using it preventatively

The base ingredients in Grow Natural will promote and facilitate the growth of beneficial bacteria and fungi in your growing media

Soax® helps the growing materials

13 15/16 x 29 15/16 x 3/4 (13.94 x 29.94 x 0.75) Pleated MERV 13 Air Filters 3 Pack water-filtration then harmlessly converts to CO2Nordic 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