20x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack Synthetic Pro Edition Pin rot (Alternaria/Xanthomonas complex) and

Pin rot (Alternaria/Xanthomonas complex) and Scab (Venturia species)

Root-deep destruction with visible results in 4–5 days

Induces flowering and stimulates resinous oil and fragrance production in many flowers and medicinal herbs

Combination of high NPK bio stimulants and bio minerals

In addition to these benefits

20x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack Synthetic Pro Edition Pin rot (Alternaria/Xanthomonas complex) andNordic Pure Half Inch Ring Panel AC Furnace Air Filters consist of an internal frame bonded between flat layers of two different types of electrostatically charged HVAC furnace filter media. The first layer is a high capacity, polyester filter material which acts as a pre filter, capturing large airborne particles. The second, more efficient, layer is a MERV rated smooth poly blend filter material. The electrostatic charge works as a magnet to draw in