14x20x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 6 Pack ac-/-dehumidification-/-humidification • Calibration 2 points -

• Calibration 2 points - automatic

micronutrients

making trimming all that much easier

Keep moist with K-L-N solution until adequate roots form

14x20x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 6 Pack ac-/-dehumidification-/-humidification • Calibration 2 points -Nordic 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