16x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 12 Pack Reflective & Greenhouse Films Simultaneous display of pH

Simultaneous display of pH

As it runs off the plants

Ideal for growers using aeroponic EZ-Clone machines

SG Ballast

and easy access reservoir lid

16x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 12 Pack Reflective & Greenhouse Films Simultaneous display of pHNordic 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