12x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack growing-media 5 pounds are sold individually

5 pounds are sold individually

InterLux™double ended bulbs are more effeciant by using the same wattage to produce higher par and lumen ratings

• High-pressure in-line pH probe with 3/4' NPT thread

expanded volcanic rock

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

12x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack growing-media 5 pounds are sold individuallyNordic 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