12x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack discounted microscopic organisms that seek out

microscopic organisms that seek out and kill queens

and 16" diameter

Can be applied as a foliar spray or root drench (depending on the disease you're treating)

Repeat applications weekly for at least 4 weeks

Nordic Pure Custom MERV 14 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering

12x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack discounted microscopic organisms that seek outNordic 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