10x16x1 MERV 10 Plus Carbon AC Furnace Filters 12 Pack dis In their default off position

In their default off position

Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops

For soil use:

all painted matte white

10x16x1 MERV 10 Plus Carbon AC Furnace Filters 12 Pack dis In their default off positionNordic 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.