18x24x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack refurbished-products and a decontaminant which dissipates

and a decontaminant which dissipates rapidly

See the usage rates below

Improved homogeneity

The iGS-221 can operate the intake and exhaust fans cyclically to replenish the garden's atmosphere in oxygen as it is needed for the plants and for safe CO2 combustion generator operation

Suggested Uses: Use through the growing cycle to boost root and plant health

18x24x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 12 Pack refurbished-products and a decontaminant which dissipatesNordic 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