12x12x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack Steel stake and quiet mixed flow impeller

and quiet mixed flow impeller

magnesium and iron supplement that helps prevent and correct common plant deficiencies and assists in plant growth and development

copper/silver

Allows medium to dry evenly

12x12x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack Steel stake and quiet mixed flow impellerNordic 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