18x22x1 MERV 14 AC Furnace Filters 12 Pack ventilation/air-conditioning noise min to 25dB

noise min to 25dB

WORKS ONLY WITH MAGNETIC BALLAST

It's what I and many other growers believe and we're sticking to it

Their job is to convert or degrade organic and inorganic compounds into simple forms that plants can easily access

so there is no need to cut back on your nutrient strength when following the feed chart

18x22x1 MERV 14 AC Furnace Filters 12 Pack ventilation/air-conditioning noise min to 25dBNordic 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.