Stage 2 - MEPT Panel Filter  MEPT Panel Filter: The filter panel features two different layers of tackified polyester media, sealed together so the tackified layers of each media touch in the center. Air enters through a multi-layered, multi-density polyester with a heavy, non-migrating tackifier on the air-leaving side. Air leaves through media that is constructed of a heavily needled polyester, densified up to ΒΌ-inch thick and tackified on the air-entry side with a weight of 0.42 ounces per square foot.
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