20x34x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack pest-and-disease-control It also features brown-out/black-out detection

It also features brown-out/black-out detection and timing for optimal light restart

9% of odors commonly found in grow facilities

• One piece greenhouse cover

A pail of ONA gel attaches securely to the bottom of the Carbon-Air unit

It also bounces the light away from the surface of the block and back up towards the foliage

20x34x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack pest-and-disease-control It also features brown-out/black-out detectionNordic 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.