18x27x1 Exact MERV 13 AC Furnace Filters 6 Pack vacuum pump rock dust and kelp for

rock dust and kelp for exceptional quality castings

Silica has been found to strengthen cell walls giving plants an increased resistance to environmental stress

adventitious roots along the base

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This consortium of specific strains work in harmony to provide a multitude of benefits to plants in a variety of conditions and soils

18x27x1 Exact MERV 13 AC Furnace Filters 6 Pack vacuum pump rock dust and kelp forNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200