18x18x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack bloom * All Vortex PROfilter products

* All Vortex PROfilter products come with a PREfilter included

grasshoppers

fruit flies

the fans will again speed up when cooling is needed

Adhesive Zipper Door is an instant door made easy

18x18x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 12 Pack bloom * All Vortex PROfilter productsNordic 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