18x24x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Nutriants Suitable for packaging processed product

Suitable for packaging processed product including bulk dried medicinal herbs and harvested materials

Already blended with correct proportions of perlite and pumice for excellent drainage and a vigorous root system

500 per acre weekly until infestation subsides

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18x24x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Nutriants Suitable for packaging processed productNordic 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