17x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 12 Pack environmental-controllers Nordic Pure 10x10x1 MERV 8

Nordic Pure 10x10x1 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

and a high lumen output to yield significant energy savings

They have a higher blue spectral ratio enhancing Veg and growth

Moisture and humidity help increase hatch rates

Add 2-7 mL of Athena Bloom A per gallon of water during the flowering phase

17x21x1 Exact MERV 7 Plus Carbon AC Furnace Filters 12 Pack environmental-controllers Nordic Pure 10x10x1 MERV 8Nordic 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.