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Need a different depth?

Same size, deeper filter

Below is 20x30 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.

20x30x2 Shop this size 20x30x4 Built to order

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

  • 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
  • 20x30x1 AAF Flanders PREpleat LPD MERV 10 Standard Capacity 80055.012030 (12 Filters)
    MERV 10
    AAF Flanders

    20x30x1 PREpleat LPD MERV 10 Standard Capacity

    $105.99
    $105.99
    Case of 12 $8.83/filter
  • 24x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    24x30x1 NaturalAire Healthy Ultra MERV 13

    $385.99
    $385.99
    Case of 12 $32.17/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
  • 18x20x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    18x20x1 NaturalAire Standard MERV 8

    $105.99
    $105.99
    Case of 12 $8.83/filter
  • 12x30x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    12x30x1 NaturalAire Microparticle MERV 10

    $237.99
    $237.99
    Case of 12 $19.83/filter
  • 14x30x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    14x30x1 NaturalAire Microparticle MERV 10

    $141.99
    $141.99
    Case of 12 $11.83/filter
  • 12x30x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    12x30x1 NaturalAire Standard MERV 8

    $129.99
    $129.99
    Case of 12 $10.83/filter
  • 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
  • 20x36x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    20x36x1 NaturalAire Microparticle MERV 10

    $289.99
    $289.99
    Case of 12 $24.17/filter
  • 20x24x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    20x24x1 NaturalAire Healthy Ultra MERV 13

    $204.99
    $204.99
    Case of 12 $17.08/filter
  • 18x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    18x20x1 NaturalAire Microparticle MERV 10

    $93.99
    $93.99
    Case of 6 $15.67/filter
  • 18x30x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    18x30x1 NaturalAire Microparticle MERV 10

    $246.99
    $246.99
    Case of 12 $20.58/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
  • 20x22x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $20.01 off
    AAF Flanders

    WAREHOUSE DEAL 20x22x1 NaturalAire Microparticle MERV 10

    Only 1 left
    $119.99
    $119.99 $140.00
    Case of 7 $17.14/filter
  • 16x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    16x20x1 NaturalAire Healthy Ultra MERV 13

    $224.99
    $224.99
    Case of 12 $18.75/filter
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