Trays are sold individually
Pathogen and Particulate Air Volume process metering
Rockwool or have hard water where less calcium is needed
Long Life: Less frequent re-lamping reduces maintenance costs
encouraging the leaching of fertilizer salts during the crop cycle and reducing water-related problems
17x25x1 Exact MERV 12 AC Furnace Filters 12 Pack pumps-&-irrigation Trays are sold individuallyNordic 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