favored by thousands of horticulturists
Nordic Pure 12x12x1 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer
Made out of medical-grade stainless steel
the trademarked phosphorus booster used in Oneness makes photosynthesis in your plants function optimally
including multi-point conductivity calibration for acids and bases
12x22x1 Exact MERV 13 AC Furnace Filters 12 Pack ac-dehumidification-humidification favored by thousands of horticulturistsNordic 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