21 x 21 x 1 Air Filter

  • MERV 8

    Pleated
      Fights lint, dust mites, mold spores, pollen, pet dander, and dust.
      21 x 21 x 1 MERV 8 Pleated Air Filter product photo
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      • Actual Size: 20 7/8" x 20 7/8" x 3/4"
      • Product: P80S.012121
    • MERV 11

      Pleated
        Fights lint, dust mites, mold spores, pollen, pet dander, dust, and smoke.
        21 x 21 x 1 MERV 11 Pleated Air Filter product photo
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        • Actual Size: 20 7/8" x 20 7/8" x 3/4"
        • Product: P15S.012121
      • MERV 13

        Pleated
          Fights lint, dust mites, mold spores, pollen, pet dander, fine dust, smoke, viruses, and bacteria.
          21 x 21 x 1 MERV 13 Pleated Air Filter product photo
          View Terms and Conditions
          • Actual Size: 20 7/8" x 20 7/8" x 3/4"
          • Product: P25S.012121

        It's time to clean the air in your home or office with new 21x21x1 air filters. Whether you are looking to improve your air quality or simply choose a replacement as efficient as your current filter, we have what you need. Choose from four different MERV ratings to find the filtration that meets your expectations, whether that is to remove pet dander, bacteria, or any other allergen. Each filter can fit your AC unit or furnace and comes with free shipping, no matter the price.