18x18x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack food-&-water-storage The mycorrhizal fungi may assist

The mycorrhizal fungi may assist plants with the uptake of nutrients and water

-Extends shelf life

8 Flexible Programmable Power Outlets

What does micron sizes mean

Terpinator

18x18x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack food-&-water-storage The mycorrhizal fungi may assistNordic 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