25x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack ph-ec-tds-meters-and-solutions like Roundup

like Roundup

Ideal for medium soil (loam)

One case of (8) GC 30 makes 4

Its easy to clean and maintain

and a humic acid boost

25x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack ph-ec-tds-meters-and-solutions like RoundupNordic 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