12x12x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Environmental Controllers Outdoor unit ambient temperature operating

Outdoor unit ambient temperature operating range: 15°F  to 110°F

The CO2 min/max can also be viewed on the LCD

Lumina is a bioavailable source of plant nutrients that can promote plant vigor and nutrition

strong root systems throughout the growing season

Dimensions: L 25" x W 10"

12x12x 1/2 Half Inch Ring Panel MERV 7 Furnace Air Filters 6 Pack Environmental Controllers Outdoor unit ambient temperature operatingNordic 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