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Need a different depth?

Same size, deeper filter

Below is 14x20 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.

14x20x2 Shop this size 14x20x4 Built to order

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

  • 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
  • 15x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    15x20x1 NaturalAire Microparticle MERV 10

    $89.99
    $89.99
    Case of 6 $15.00/filter
  • 15x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    Up to $10.39 off
    AAF Flanders

    WAREHOUSE DEAL 15x20x1 NaturalAire Healthy Ultra MERV 13

    Only 1 left
    $149.99
    $149.99 $160.38
    Case of 11 $13.64/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
  • 16x20x1 NaturalAire Microparticle MERV 10 85256.011620 (6 Filters)
    MERV 10
    AAF Flanders

    16x20x1 NaturalAire Microparticle MERV 10

    $69.99
    $69.99
    Case of 6 $11.67/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
  • 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
  • Koch Disposable Fiberglass Panel Filter
    MERV 1-4
    Koch

    Disposable Fiberglass Panel Filter

    From $59.99
    From $59.99
  • 14x14x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    14x14x1 NaturalAire Microparticle MERV 10

    $106.99
    $106.99
    Case of 12 $8.92/filter
  • 12x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    Up to $79.21 off
    AAF Flanders

    WAREHOUSE DEAL 12x20x1 NaturalAire Healthy Ultra MERV 13

    Only 1 left
    $129.99
    $129.99 $209.20
    Case of 10 $13.00/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
  • 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
  • 14x25x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    14x25x1 NaturalAire Healthy Ultra MERV 13

    $249.99
    $249.99
    Case of 12 $20.83/filter
  • 13x20x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    13x20x1 NaturalAire Standard MERV 8

    $232.99
    $232.99
    Case of 12 $19.42/filter
  • 16x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $41.11 off
    AAF Flanders

    WAREHOUSE DEAL 16x20x1 NaturalAire Microparticle MERV 10

    Only 1 left
    $98.88
    $98.88 $139.99
    Case of 12 $8.24/filter
  • 14x18x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    14x18x1 NaturalAire Microparticle MERV 10

    $217.99
    $217.99
    Case of 12 $18.17/filter
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