11 3/8x11 3/8x1 Exact MERV 14 AC Furnace Filters 12 Pack Environmental Controllers Dolomitic and Calcitic limestone (pH

Dolomitic and Calcitic limestone (pH adjuster)

Controls these bacterial & fungal diseases: Powdery Mildew

Seaweed extract fertilizer for plants

beds and most other growing techniques

Packaging Dimensions - 18" x 14" x 10"

11 3/8x11 3/8x1 Exact MERV 14 AC Furnace Filters 12 Pack Environmental Controllers Dolomitic and Calcitic limestone (pHNordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.