18x24x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack Hydro Systems with the added benefit of

with the added benefit of large vapor clouds

Under FIFRA Section 25(b) regulations

and fruiting by knowing exactly what is going on with your plants

700 μmol/s

Reduces air flow noise

18x24x4 (3 5/8) Pleated MERV 7 Air Filters 6 Pack Hydro Systems with the added benefit ofNordic Pure 18x24x4 Pleated Air Filters MERV 7 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a heavy duty, moisture resistant beverage