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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.

  • 12x30x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    12x30x1 NaturalAire Microparticle MERV 10

    $118.99
    $118.99
    Case of 6 $19.83/filter
  • 20x25x4-1/2 NaturalAire Choice Allergen MERV 8 82655.0452025 (2 Filters)
    MERV 8
    AAF Flanders

    20x25x4-1/2 NaturalAire Choice Allergen MERV 8

    $104.99
    $104.99
    Case of 2 $52.50/filter
  • 23-1/2x23-1/2x1 NaturalAire Standard MERV 8 84858.01235235 (12 Filters)
    MERV 8
    AAF Flanders

    23-1/2x23-1/2x1 NaturalAire Standard MERV 8

    $146.99
    $146.99
    Case of 12 $12.25/filter
  • 16x25x4-1/2 NaturalAire Choice Allergen MERV 8 82655.0451625 (2 Filters)
    MERV 8
    AAF Flanders

    16x25x4-1/2 NaturalAire Choice Allergen MERV 8

    $104.99
    $104.99
    Case of 2 $52.50/filter
  • 14x14x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    14x14x1 NaturalAire Healthy Ultra MERV 13

    $178.99
    $178.99
    Case of 12 $14.92/filter
  • 23.5x23.5x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    23-1/2x23-1/2x1 NaturalAire Microparticle MERV 10

    $273.99
    $273.99
    Case of 12 $22.83/filter
  • 18x24x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $18.11 off
    AAF Flanders

    WAREHOUSE DEAL 18x24x1 NaturalAire Microparticle MERV 10

    $59.88
    $59.88 $77.99
    Case of 6 $9.98/filter
  • 22x22x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    22x22x1 NaturalAire Healthy Ultra MERV 13

    $213.99
    $213.99
    Case of 12 $17.83/filter
  • 29-1/2x19-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    Up to $162 off
    AAF Flanders

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

    Only 1 left
    $114.99
    $114.99 $276.99
    Case of 12 $9.58/filter
  • 10x24x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $12.67 off
    AAF Flanders

    WAREHOUSE DEAL 10x24x1 NaturalAire Microparticle MERV 10

    Only 1 left
    $24.99
    $24.99 $37.66
    Case of 2 $12.50/filter
  • 21x21x1 NaturalAire Standard MERV 8 84858.012121 (12 Filters)
    MERV 8
    AAF Flanders

    21x21x1 NaturalAire Standard MERV 8

    $175.99
    $175.99
    Case of 12 $14.67/filter
  • 20x20x1 NaturalAire Odor Eliminator with Baking Soda MERV 8 air filter
    MERV 8
    AAF Flanders

    20x20x1 NaturalAire Odor Eliminator with Baking Soda MERV 8

    $56.99
    $56.99
    Case of 4 $14.25/filter
  • 20x22-1/4x1 NaturalAire Standard MERV 8 84858.01202225 (12 Filters)
    MERV 8
    AAF Flanders

    20x22-1/4x1 NaturalAire Standard MERV 8

    $173.99
    $173.99
    Case of 12 $14.50/filter
  • 17-1/2x17-1/2x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    17-1/2x17-1/2x1 NaturalAire Healthy Ultra MERV 13

    $314.99
    $314.99
    Case of 12 $26.25/filter
  • 25x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    25x30x1 NaturalAire Healthy Ultra MERV 13

    $380.99
    $380.99
    Case of 12 $31.75/filter
  • 20x22x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    20x22x1 NaturalAire Microparticle MERV 10

    $261.99
    $261.99
    Case of 12 $21.83/filter
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