30x36x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Fertilizer flat surface making them perfect

flat surface making them perfect for writing on

144 x PotPro™ | 6" Tall (1 Gallon)

and regularly adjust their height

To use Hydrofarm's CO2 Flow Rate Calculator

30x36x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Fertilizer flat surface making them perfectNordic 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.