20x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack tents-&-tarps As an anti-feedant which will

As an anti-feedant which will discourage insects from feeding on treated plants

It doesn't get easier or better than this

reducing the risk of irritation and allergic reactions

These systems are specifically designed for serious growers

This 36 or 48 inch assembly will install right where you need it

20x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack tents-&-tarps As an anti-feedant which willNordic 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