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Need a different depth?

Same size, deeper filter

Below is 8x24 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.

8x24x2 Built to order 8x24x4 Built to order

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

  • 12x24x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8Up to $20.11 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 12x24x1 NaturalAire Standard MERV 8

    $79.88
    $79.88 $99.99
    Case of 12 $6.66/filter
  • 17-1/2x23-1/2x1 NaturalAire Standard MERV 8 84858.01175235 (12 Filters)
    AAF Flanders

    17-1/2x23-1/2x1 NaturalAire Standard MERV 8

    $156.99
    $156.99
    Case of 12 $13.08/filter
  • WAREHOUSE DEAL 16x20x1 NaturalAire Standard MERV 8 84858.011620 (12 Filters)
    MERV 8Up to $17 off
    AAF Flanders

    WAREHOUSE DEAL 16x20x1 NaturalAire Standard MERV 8

    Only 1 left
    $79.99
    $79.99 $96.99
    Case of 12 $6.67/filter
  • 16x25x3 NaturalAire Choice Allergen MERV 8 82655.031625 (2 Filters)
    MERV 8
    AAF Flanders

    16x25x3 NaturalAire Choice Allergen MERV 8

    $109.99
    $109.99
    Case of 2 $55.00/filter
  • 16x20x4-1/2 NaturalAire Choice Allergen MERV 8 82655.0451620 (2 Filters)
    MERV 8
    AAF Flanders

    16x20x4-1/2 NaturalAire Choice Allergen MERV 8

    $164.99
    $164.99
    Case of 2 $82.50/filter
  • 23-1/2x21-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    23-1/2x21-1/2x1 NaturalAire Standard MERV 8

    $200.99
    $200.99
    Case of 12 $16.75/filter
  • 24x24x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    24x24x1 NaturalAire Healthy Ultra MERV 13

    $261.99
    $261.99
    Case of 12 $21.83/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
  • 19-1/2x23x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    19-1/2x23x1 NaturalAire Standard MERV 8

    $266.99
    $266.99
    Case of 12 $22.25/filter
  • 10x24x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    10x24x1 NaturalAire Microparticle MERV 10

    $121.99
    $121.99
    Case of 6 $20.33/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
  • 20x25x3 NaturalAire Choice Allergen MERV 8 82655.032025 (3 Filters)
    MERV 8Contact Support
    AAF Flanders

    20x25x3 NaturalAire Choice Allergen MERV 8

    $210.99
    $210.99
    Case of 3 $70.33/filter
  • 24x24x1 NaturalAire Microparticle MERV 10 85256.012424 (6 Filters)
    MERV 10
    AAF Flanders

    24x24x1 NaturalAire Microparticle MERV 10

    $95.99
    $95.99
    Case of 6 $16.00/filter
  • 15x24x1/4 NaturalAire Kwik Kut Foam Filter KK1000 (24 pack)
    MERV 1-4
    AAF Flanders

    15x24x1/4 NaturalAire Kwik Kut Foam Filter KK1000

    $197.99
    $197.99
    Case of 24 $8.25/filter
  • 11-1/2x11-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8Up to $27.11 off
    AAF Flanders

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

    Only 1 left
    $118.88
    $118.88 $145.99
    Case of 12 $9.91/filter
  • 21-1/4x37-1/4x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    21-1/4x37-1/4x1 NaturalAire Standard MERV 8

    $297.99
    $297.99
    Case of 12 $24.83/filter
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