17x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 12 Pack loose coco The Bluelab Carry Case provides

The Bluelab Carry Case provides a custom fit so you can use and read your Bluelab meter right from the carry case

Compatible with many commonly used fertilizers

we need precise spectral control

successful and vigorous rooting of “easy to extremely difficult” plant varieties

Suitable for indoor

17x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 12 Pack loose coco The Bluelab Carry Case providesNordic 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.