20x30x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Grow Strong CMH technology gives you the

CMH technology gives you the proportions and quality you need for your crop

Safer Brand Insect Killing Soap is safe to use around children and pets

Marked & graduated for depth

Rare Dankness Perfecta FORTIFY is an additive that aids in plant rigidity and strength

20x30x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Grow Strong CMH technology gives you theNordic 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