20x30x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 6 Pack plant-support salt-free and FDA compliant

salt-free and FDA compliant

Trim in your garage

Use with the HI981421 GroLine Monitor to provide around-the-clock

This kit contains 4" flanges that will allow you to set  up air-cooling of two Powerhouse ballasts or a Daystar DAUN reflector

Secondary Lights (5 each

20x30x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 6 Pack plant-support salt-free and FDA compliantNordic 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