12x22x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack control system and sound an alarm (both

and sound an alarm (both visible and audible) in the event of the CO2 level going above normal or safe levels

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Your choice of lamp

delivers a higher PPFD (usable light that actually reaches the plant) per watt value to the plant canopy than other equivalent LED greenhouse fixtures

12x22x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack control system and sound an alarm (bothNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.