10x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack Air Purification Engineered for accuracy and durability

Engineered for accuracy and durability

The white outer layer helps deflect light and keep temperatures cooler inside of the tubing

we have determined that the best results with these biologically active media will be obtained by a smart combination of mineral and organic nutrients

many other listed insects

Add last to reservoir

10x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack Air Purification Engineered for accuracy and durabilityNordic 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