21x22x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack tents-/-indoor-greenhouses Measures in part per million

Measures in part per million (PPM)

4KW Ultrasonic Power @ 28KHz

This powerful formulation delivers a stable

which enter through plant cell walls and disturb cell functions

Being one of the only natural and dry flower hardeners

21x22x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack tents-/-indoor-greenhouses Measures in part per millionNordic 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.