13x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack rockwool Calcium and magnesium are two

Calcium and magnesium are two of the macro elements that are significant to plants' growth and development

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THIS UNIT REQUIRES A VACUUM PUMP AND DRY ICE TO FUNCTION

and is compact and lightweight

Temperature is factory calibrated

13x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack rockwool Calcium and magnesium are twoNordic 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.