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Need a different depth?

Same size, deeper filter

Below is 16x25 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.

16x25x2 Shop this size 16x25x4 Shop this size

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

  • 10x25x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    10x25x1 NaturalAire Standard MERV 8

    $232.99
    $232.99
    Case of 12 $19.42/filter
  • 16x36x1 NaturalAire Standard MERV 8 84858.011636 (12 Filters)
    MERV 8
    AAF Flanders

    16x36x1 NaturalAire Standard MERV 8

    $176.99
    $176.99
    Case of 12 $14.75/filter
  • 20x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    20x30x1 NaturalAire Healthy Ultra MERV 13

    $228.99
    $228.99
    Case of 12 $19.08/filter
  • 18x25x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    18x25x1 NaturalAire Microparticle MERV 10

    $127.99
    $127.99
    Case of 6 $21.33/filter
  • 16x16x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8
    AAF Flanders

    16x16x1 NaturalAire Standard MERV 8

    $138.99
    $138.99
    Case of 12 $11.58/filter
  • 17-1/2x29-1/2x1 NaturalAire Standard MERV 8 84858.01175295 (12 Filters)
    MERV 8
    AAF Flanders

    17-1/2x29-1/2x1 NaturalAire Standard MERV 8

    $170.99
    $170.99
    Case of 12 $14.25/filter
  • 20x20x1 NaturalAire Standard MERV 8 84858.012020 (12 Filters)
    MERV 8
    AAF Flanders

    20x20x1 NaturalAire Standard MERV 8

    $104.99
    $104.99
    Case of 12 $8.75/filter
  • 16x30x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    16x30x1 NaturalAire Microparticle MERV 10

    $115.99
    $115.99
    Case of 6 $19.33/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
  • 20x25x6 NaturalAire Choice Allergen MERV 8 82655.062025 (3 Filters)
    MERV 8Contact Support
    AAF Flanders

    20x25x6 NaturalAire Choice Allergen MERV 8

    $190.99
    $190.99
    Case of 3 $63.66/filter
  • 20x25x1 NaturalAire Odor Eliminator with Baking Soda MERV 8 air filter
    MERV 8
    AAF Flanders

    20x25x1 NaturalAire Odor Eliminator with Baking Soda MERV 8

    $61.99
    $61.99
    Case of 4 $15.50/filter
  • 18x25x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    18x25x1 NaturalAire Microparticle MERV 10

    $260.99
    $260.99
    Case of 12 $21.75/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
  • 16x30x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    16x30x1 NaturalAire Microparticle MERV 10

    $255.99
    $255.99
    Case of 12 $21.33/filter
  • 16x16x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    16x16x1 NaturalAire Healthy Ultra MERV 13

    $275.99
    $275.99
    Case of 12 $23.00/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
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