10x30x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack cube Using the hole closest to

Using the hole closest to the lamp will give the most focused light spread

but is especially effective against bed bugs

Also prevents debris from contaminating the nutrient solution

Derived from Ammonium Calcium Nitrate Double Salt

10x30x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack cube Using the hole closest toNordic 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