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18x18x1 Air Filters

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    • Basic
      Filtration

    • $43.98/Box of 12
      ($3.67/ea)

      • Glasfloss 18x18x1 Air Filter GDS Series
      • Basic Air Filter
      • Glasfloss GDS Series
      • 18x18x1 (17-5/8 x 17-5/8 x 3/4)
      • Basic Equipment Protection
      • 30 Day Filter
      • (More Information)
    • Add to Cart
    • Basic+
      Filtration

    • $57.80/Box of 12
      ($4.82/ea)

      • Glasfloss 18x18x1 Air Filter PTA Series
      • Basic+ Air Filter
      • Glasfloss PTA Series
      • 18x18x1 (17-5/8 x 17-5/8 x 3/4)
      • Basic+ Equipment Protection
      • 30 Day Filter
      • (More Information)
    • Add to Cart
    • MERV 10
      Filtration

    • $84.89/Box of 12
      ($7.07/ea)

      • Glasfloss 18x18x1 Air Filter ZL Series
      • MERV 10 Air Filter
      • Glasfloss ZL Series
      • 18x18x1 (17-1/2 x 17-1/2 x 7/8)
      • Standard Allergen Removal
      • Up to 90 Day Filter
      • (More Information)
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    • MERV 11
      Filtration

    • $100.83/Box of 12
      ($8.40/ea)

      • Glasfloss 18x18x1 Air Filter MR-11 Series
      • MERV 11 Air Filter
      • Glasfloss MR-11 Series
      • 18x18x1 (17-1/2 x 17-1/2 x 7/8)
      • Superior Allergen Removal
      • Up to 90 Day Filter
      • (More Information)
    • Add to Cart

Which Air Filter is Best For Me?

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18x18x1 Air Filters