AIRx 18x20x4-DUST | Our#: 179978

18x20x4 AIRx DUST Air Filter - MERV 8

AIRx 18x20x4-DUST | Our#: 179978

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Enjoy a cleaner home with less work

  • Reduces dust, lint, dust mites, pollen
  • Will help keep your HVAC system clean
  • Maintains superior airflow
  • Creates cleaner indoor air
  • Actual Dimensions: 17 ½" x 19 ½" x 3 ¾"

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Product Details

18x20x4 AIRx DUST Air Filter - MERV 8

(Actual Size 17.5" x 19.5" x 3.75")

Improving indoor air quality starts with improving your filtration system. If you're still using ordinary furnace filters, you might want to upgrade to pleated panel filters. Pleated panel filters have been proven to outperform ordinary furnace filters. This is achieved through optimal pleat spacing and high initial and sustained efficiency, 100% synthetic electrostatically charged media, very low pressure drop, and high capacity for holding dust. As another added benefit, the media is resistant to a wide variety of chemicals, will not support microbial growth, and does not absorb moisture.

Great at reducing airborne allergens such as: bacteria, particles that carry viruses, pollen, find dust, pet dander, and mold. This filter material has no added chemicals and is 30x more efficient at trapping and holding micro particles than ordinary filters made with fiberglass. These filters last up to 3 months.


  • MERV 8 Rating
  • Electrostatically charged, 100% synthetic gradient media
  • Media pack totally bonded to frame
  • Moisture resistant double wall beverage board
  • 30 gauge galvanized expanded metal grid
  • Underwriters Laboratories rating: U.L. Class 2.