16x21x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Plant Support This exclusive formula is a

This exclusive formula is a universal supplement for both growth and bloom

2 μmol/J electrical efficiency

NOTE: This item ships directly from vendor

the Stage 2 also allows you to select how the timers will react in the event of a power interruption

0μmol/J efficacy

16x21x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Plant Support This exclusive formula is aNordic 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.