20x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack -monitors-&-timers The XTE3150 CMh ballast features

The XTE3150 CMh ballast features low frequency

The unique Quantanium coating does not require sprays or oils

Centurion machines are the only brand that uses a unique diverter to help fine tune the flow and cut on different strains giving the grower the ability to quickly adjust to different strains

15 mil gauge

20x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack -monitors-&-timers The XTE3150 CMh ballast featuresNordic 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.