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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.

  • 10x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    10x20x1 NaturalAire Microparticle MERV 10

    $71.99
    $71.99
    Case of 6 $12.00/filter
  • 20x22x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    20x22x1 NaturalAire Microparticle MERV 10

    $123.99
    $123.99
    Case of 6 $20.67/filter
  • 14x18x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    14x18x1 NaturalAire Standard MERV 8

    $248.99
    $248.99
    Case of 12 $20.75/filter
  • 18x18x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    18x18x1 NaturalAire Standard MERV 8

    $103.99
    $103.99
    Case of 12 $8.67/filter
  • 22x22x1 NaturalAire Odor Eliminator with Baking Soda MERV 8 air filter
    MERV 8
    AAF Flanders

    22x22x1 NaturalAire Odor Eliminator with Baking Soda MERV 8

    $91.99
    $91.99
    Case of 4 $23.00/filter
  • 17-5/8x35-5/8x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    17-5/8x35-5/8x1 NaturalAire Standard MERV 8

    $202.99
    $202.99
    Case of 12 $16.92/filter
  • 23x23x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    23x23x1 NaturalAire Standard MERV 8

    $192.99
    $192.99
    Case of 12 $16.08/filter
  • NaturalAire Healthy Ultra MERV 13 (4 Filters)
    MERV 13
    AAF Flanders

    NaturalAire Healthy Ultra MERV 13

    $100.99
    $100.99
    Case of 4 $25.25/filter
  • 15x24x1/4 NaturalAire Kwik Kut Foam Filter KK500 (24 pack)
    MERV 1-4
    AAF Flanders

    15x24x1/4 NaturalAire Kwik Kut Foam Filter KK500

    $120.99
    $120.99
    Case of 24 $5.04/filter
  • AAF Flanders PREpleat M13 MERV 13 (12 Filters)
    MERV 13
    AAF Flanders

    PREpleat M13 MERV 13

    From $195.99
    From $195.99
    Case of 12 $16.33/filter
  • 20x30x1 NaturalAire Microparticle MERV 10 85156.012030 (12 Filters)
    MERV 10
    AAF Flanders

    20x30x1 NaturalAire Microparticle MERV 10

    $171.99
    $171.99
    Case of 12 $14.33/filter
  • 25x25x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    25x25x1 NaturalAire Standard MERV 8

    $187.99
    $187.99
    Case of 12 $15.67/filter
  • 20x30x1 NaturalAire Microparticle MERV 10 85256.012030 (6 Filters)
    MERV 10
    AAF Flanders

    20x30x1 NaturalAire Microparticle MERV 10

    $94.99
    $94.99
    Case of 6 $15.83/filter
  • 10x10x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    10x10x1 NaturalAire Microparticle MERV 10

    $116.99
    $116.99
    Case of 6 $19.50/filter
  • 15x25x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    15x25x1 NaturalAire Standard MERV 8

    $242.99
    $242.99
    Case of 12 $20.25/filter
  • 24x30x1 NaturalAire Odor Eliminator with Baking Soda MERV 8 air filter
    MERV 8
    AAF Flanders

    24x30x1 NaturalAire Odor Eliminator with Baking Soda MERV 8

    $113.99
    $113.99
    Case of 4 $28.50/filter
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