16x27x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack reflective-and-greenhouse-films Since SNS 209 works within

Since SNS 209 works within the plant tissue

and hearty field vegetables

Visual LED alarm

Based on 18 hour burn time per day

If your soil has high alkalinity for a particular plant

16x27x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack reflective-and-greenhouse-films Since SNS 209 works withinNordic 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.