18x18x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Hydroponics or feedlots

or feedlots

schools or businesses

Air Flow Ratio 0

If you can turn a wrench

Growstone GS-1 Hydro Stones is the perfect growing media for vegetables

18x18x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Hydroponics or feedlotsNordic 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