12x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack harvest-solutions making it a better choice

making it a better choice for the conscious and sustainable minded gardener

All materials are rated for washdown and are resistant to corrosion from commercial cleaners and sanitizers

and IP66 waterproof

The yellow spectual output makes them optimal for flowering stage

12x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack harvest-solutions making it a better choiceNordic 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