20x25x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 12 Pack environmental-controllers which results in darker green

which results in darker green leaves and increased sugar content in plants

and is made from recyclable HDPE

made of high quality stainless steel

Increase efficiency

This Product Controls These Pests or Diseases: For use to control aphids

20x25x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters 12 Pack environmental-controllers which results in darker greenNordic 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