20x21x1 Exact MERV 12 AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions • Conforms and approved to

• Conforms and approved to Organic standards for certified organic growers

During the vegetative stage

Because a plant's blooming phase may be the most important in its growth cycle

Visual LED alarm

Electrical magnetic air compressor in a high quality aluminum alloy case

20x21x1 Exact MERV 12 AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions • Conforms and approved toNordic 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