20x30x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Growing Accessories 5% of all odors and

5% of all odors and most other airborne particles to keep your plants safe

This line of time-tested activated carbon air filters sets the standard for long life

This potent microorganism is essential for phosphorus uptake in plants

Ultra thin and unfolded designed is optimized the mounting for every grower

20x30x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Growing Accessories 5% of all odors andNordic 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