13x20x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack Grow Light Ballasts you simply screw it into

you simply screw it into your CFL reflector

(24) Neoprene Inserts (4 different colors)

creating the optimal growing conditions

which is widely known to increase resin production

The Checker Plus now offers automatic calibration to one or two points

13x20x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack Grow Light Ballasts you simply screw it intoNordic 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.