20x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack Aeromixer • 100% virgin high quality

• 100% virgin high quality material

The ducting is also durable with multiple layers of inner liners to protect from punctures from sharp objects

Rhizobium japonicum

• 2' x 3' BPA-free mat

Safe around food crops — can be applied in vegetable gardens

20x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack Aeromixer • 100% virgin high qualityNordic 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