12x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack nutrients-and-supplements and after a rain or

and after a rain or irrigation when deficiency symptoms are present or during growth periods when additional calcium is needed

Safe to use on fruits and vegetables throughout the growing season up to the day of harvest

First of its kind

• 120 Hertz

12x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack nutrients-and-supplements and after a rain orNordic Pure 12x24x4 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material while