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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.

  • 15x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    15x30x1 NaturalAire Healthy Ultra MERV 13

    $328.99
    $328.99
    Case of 12 $27.42/filter
  • 15x24x1/4 NaturalAire Kwik Kut Expanded Aluminum Filter KK1601 (24 pack)
    MERV 1-4
    AAF Flanders

    15x24x1/4 NaturalAire Kwik Kut Expanded Aluminum Filter KK1601

    $271.99
    $271.99 $191.76
    Case of 24 $11.33/filter
  • 15x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    15x20x1 NaturalAire Healthy Ultra MERV 13

    $281.99
    $281.99
    Case of 12 $23.50/filter
  • 19x21-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    19x21-1/2x1 NaturalAire Standard MERV 8

    $268.99
    $268.99
    Case of 12 $22.42/filter
  • 10x10x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    10x10x1 NaturalAire Microparticle MERV 10

    $225.99
    $225.99
    Case of 12 $18.83/filter
  • 20x22x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    20x22x1 NaturalAire Standard MERV 8

    $179.99
    $179.99
    Case of 12 $15.00/filter
  • 20x36x1 NaturalAire Standard MERV 8 84858.012036 (12 Filters)
    MERV 8
    AAF Flanders

    20x36x1 NaturalAire Standard MERV 8

    $186.99
    $186.99
    Case of 12 $15.58/filter
  • 18x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    18x30x1 NaturalAire Healthy Ultra MERV 13

    $326.99
    $326.99
    Case of 12 $27.25/filter
  • 17-1/2x26-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    17-1/2x26-1/2x1 NaturalAire Standard MERV 8

    $270.99
    $270.99
    Case of 12 $22.58/filter
  • 08x14x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    8x14x1 NaturalAire Standard MERV 8

    $219.99
    $219.99
    Case of 12 $18.33/filter
  • 14x30x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    14x30x1 NaturalAire Standard MERV 8

    $149.99
    $149.99
    Case of 12 $12.50/filter
  • 11-1/2x11-1/2x1 NaturalAire Standard MERV 8 84858.01115115 (12 Filters)
    MERV 8
    AAF Flanders

    11-1/2x11-1/2x1 NaturalAire Standard MERV 8

    $159.99
    $159.99
    Case of 12 $13.33/filter
  • 16x16x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    16x16x1 NaturalAire Healthy Ultra MERV 13

    $275.99
    $275.99
    Case of 12 $23.00/filter
  • 20x25x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    20x25x1 NaturalAire Healthy Ultra MERV 13

    $191.99
    $191.99
    Case of 12 $16.00/filter
  • 12x18x1 NaturalAire Odor Eliminator with Baking Soda MERV 8 air filter
    MERV 8
    AAF Flanders

    12x18x1 NaturalAire Odor Eliminator with Baking Soda MERV 8

    $57.99
    $57.99
    Case of 4 $14.50/filter
  • 18x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    18x20x1 NaturalAire Healthy Ultra MERV 13

    $193.99
    $193.99
    Case of 12 $16.17/filter
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