12x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack food-storage When combined with Grow A

When combined with Grow A and B and Bloom B

Heavy-duty construction contains aluminum flanges and dual-sided galvanized steel mesh

Contains no contains no volatile organic compounds (VOC) or synthetic chemicals

alternate treatments of Defender PM with treatments of Insect Annihilator

12x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack food-storage When combined with Grow ANordic 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