22x30x1 MERV 12 AC Furnace Filters 6 Pack cloning-&-seed-starting • Dolomitic and Calcitic limestone

• Dolomitic and Calcitic limestone (pH adjuster)

Powder coated for durability

For use in hydroponic

Runs on a 12V adapter

Adjustable air outlet

22x30x1 MERV 12 AC Furnace Filters 6 Pack cloning-&-seed-starting • Dolomitic and Calcitic limestoneNordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different