20x30x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Lighting & Electrical Components Day and night settings allow

Day and night settings allow for accurate environmental control

The Colonizer Lid is a simple and effective solution for promoting early-stage growth

purple stem

Stop Pests

20x30x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Lighting & Electrical Components Day and night settings allowNordic 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