20x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 12 Pack harvest-solutions Use OxiPhos throughout the growing

Use OxiPhos throughout the growing season to both prevent and control plant pathogens

2" high and the slim design won't take up much space in your indoor grow room

EZ CO2 is a natural safe and inexpensive way of providing your plants with carbon dioxide (CO2)

True IP65 protection: Defends against water and dust

20x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 12 Pack harvest-solutions Use OxiPhos throughout the growingNordic 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