14x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 6 Pack Nutrients and Supplements Temp Range: 41°F-95°F

Temp Range: 41°F-95°F

enhancing your plants vigor and growth all season long

it interferes with pest development

Calcium is critical to the health of your plant

14x20x 1/2 Half Inch Ring Panel MERV 10 Furnace Air Filters 6 Pack Nutrients and Supplements Temp Range: 41°F-95°FNordic 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