12x12x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Led B3 is a natural and

B3 is a natural and organic alternative to synthetic fertilizers

Compatible with all types of hydroponic systems

one corded thermal probe

Dimensions - 15*15*114 cm

12x12x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack Led B3 is a natural 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