10x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES but can be diluted according

but can be diluted according to your needs:

Can be applied throughout the growing season

Precision German glass filter lens with our patent pending Rendition Perfect Color HPS technology

"on" level range is 2"-3"

* Adjustable height

10x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES but can be diluted accordingNordic 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.