18x18x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 6 Pack Monterey Lawn & Garden Products -4 inch diameter

-4 inch diameter

binding and removing undesirable salts and heavy minerals

and all G-Lite XL sizes 15-100 gallon are made with a sturdy gray geotextile material

Two SunBlaster NanoTech T5 Reflectors - maximizing output

18x18x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 6 Pack Monterey Lawn & Garden Products -4 inch diameterNordic 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