13x20x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack pest-and-disease-control Adding this poly film to

Adding this poly film to your walls requires no structural changes—you'll leave your place exactly as you found it

Use at 1:5 ratio for best results

Magnesium Nitrate

Speed up the flowering and fruiting stage

13x20x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack pest-and-disease-control Adding this poly film toNordic 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.