12x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack discounted 80Drain diameter (punched): 0

80Drain diameter (punched): 0

A high-quality tool kit is provided with the purchase of the CenturionPro® Mini

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

or irrigation tubing to the outlet end

Repeat applications weekly for at least 4 weeks

12x20x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack discounted 80Drain diameter (punched): 0Nordic 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