21x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack ventilation Batch to batch consistency in

Batch to batch consistency in both composition and microbiology delivers the highest level of quality and value

Add the packet to the buffering solution

Nordic Pure 18x20x2 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

Does not apply to the actual fertilizing materials (active ingredients)

Safety is key in the grow room

21x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack ventilation Batch to batch consistency inNordic 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.