13x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Commercial Lighting the lightweight Goblin filter is

the lightweight Goblin filter is specifically designed and sized to hang inside smaller grow tents or huts

5 ml per gallon

blue and white) knobs for precise spectral control

reliable and versatile: Combo Meter Plus means you will be able to measure more and build a better understanding of your complete growing system

It also contains amino acids that improve protein synthesis and can help build strong cell walls that resist stretching during growth

13x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Commercial Lighting the lightweight Goblin filter isNordic 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.