12x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack growing-media reduce fertilizing until they show

reduce fertilizing until they show signs of growth again

and horticultural applications

5 pounds are sold individually

Complete and Balanced Formula: Delivers all necessary nutrients in one concentrated solution

20 tubes per pack

12x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack growing-media reduce fertilizing until they showNordic 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