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Need a different depth?

Same size, deeper filter

Below is 12x24 at 1 naturalaire″. A thicker filter holds more before it loads up, so it lasts longer between changes and puts less strain on the blower — we carry the same width and height in the depths below.

12x24x2 Shop this size 12x24x4 Shop this size

Ordering for a building? Ask for volume pricing or call 1-866-469-8556.

  • 14x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    14x30x1 NaturalAire Healthy Ultra MERV 13

    $234.99
    $234.99
    Case of 12 $19.58/filter
  • 18x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    18x20x1 NaturalAire Microparticle MERV 10

    $204.99
    $204.99
    Case of 12 $17.08/filter
  • 18x18x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    18x18x1 NaturalAire Healthy Ultra MERV 13

    $195.99
    $195.99
    Case of 12 $16.33/filter
  • 25x25x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    25x25x1 NaturalAire Healthy Ultra MERV 13

    $230.99
    $230.99
    Case of 12 $19.25/filter
  • 16x16x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    16x16x1 NaturalAire Microparticle MERV 10

    $120.99
    $120.99
    Case of 6 $20.17/filter
  • 17.5x23.5x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    17-1/2x23-1/2x1 NaturalAire Microparticle MERV 10

    $259.99
    $259.99
    Case of 12 $21.67/filter
  • 29-1/2x19-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    29-1/2x19-1/2x1 NaturalAire Standard MERV 8

    $283.99
    $283.99
    Case of 12 $23.67/filter
  • 20x36x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    20x36x1 NaturalAire Healthy Ultra MERV 13

    $370.99
    $370.99
    Case of 12 $30.92/filter
  • 15x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    Up to $10.39 off
    AAF Flanders

    WAREHOUSE DEAL 15x20x1 NaturalAire Healthy Ultra MERV 13

    Only 1 left
    $149.99
    $149.99 $160.38
    Case of 11 $13.64/filter
  • 18x36x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    18x36x1 NaturalAire Healthy Ultra MERV 13

    $351.99
    $351.99
    Case of 12 $29.33/filter
  • 18x25x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    18x25x1 NaturalAire Healthy Ultra MERV 13

    $332.99
    $332.99
    Case of 12 $27.75/filter
  • 16x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    16x30x1 NaturalAire Healthy Ultra MERV 13

    $327.99
    $327.99
    Case of 12 $27.33/filter
  • 20x22x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    20x22x1 NaturalAire Healthy Ultra MERV 13

    $329.99
    $329.99
    Case of 12 $27.50/filter
  • 14x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    14x20x1 NaturalAire Healthy Ultra MERV 13

    $230.99
    $230.99
    Case of 12 $19.25/filter
  • 20x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    20x20x1 NaturalAire Healthy Ultra MERV 13

    $241.99
    $241.99
    Case of 12 $20.17/filter
  • 19x20x4 NaturalAire Choice Allergen MERV 8 82655.041920 (2 Filters)
    MERV 8
    AAF Flanders

    19x20x4 NaturalAire Choice Allergen MERV 8

    $136.99
    $136.99
    Case of 2 $68.50/filter
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