16x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Controller Excellent PAR output (1450 µmol/s)

Excellent PAR output (1450 µmol/s)

or combining them to make the ABSOLUTE TALLEST GROW TENT KNOWN TO MANKIND

Greenhouse whiteflies are typically found on poinsettias

Increases nutrient/water absorption

Included colors are red

16x20x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Controller Excellent PAR output (1450 µmol/s)Nordic 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