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Need a different depth?

Same size, deeper filter

Below is 16x20 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.

16x20x2 Shop this size 16x20x4 Shop this size

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

  • 20x30x1 NaturalAire Microparticle MERV 10 85156.012030 (12 Filters)
    MERV 10
    AAF Flanders

    20x30x1 NaturalAire Microparticle MERV 10

    $171.99
    $171.99
    Case of 12 $14.33/filter
  • 20x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13Up to $40.31 off
    AAF Flanders

    WAREHOUSE DEAL 20x20x1 NaturalAire Healthy Ultra MERV 13

    Only 1 left
    $142.99
    $142.99 $183.30
    Case of 10 $14.30/filter
  • 12x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    12x20x1 NaturalAire Microparticle MERV 10

    $109.99
    $109.99
    Case of 12 $9.17/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
  • 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
  • 14x20x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    14x20x1 NaturalAire Healthy Ultra MERV 13

    $230.99
    $230.99
    Case of 12 $19.25/filter
  • 12x20x1 NaturalAire Standard MERV 8 84858.011220 (12 Filters)
    MERV 8
    AAF Flanders

    12x20x1 NaturalAire Standard MERV 8

    $95.99
    $95.99
    Case of 12 $8.00/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
  • 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
  • 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
  • 10x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10Up to $48 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 10x20x1 NaturalAire Microparticle MERV 10

    $89.99
    $89.99 $137.99
    Case of 12 $7.50/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
  • 12x20x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    12x20x1 NaturalAire Microparticle MERV 10

    $74.99
    $74.99
    Case of 6 $12.50/filter
  • 10x20x1 NaturalAire Standard MERV 8 Filters (12 pack)
    MERV 8Up to $30.76 offContact Support
    AAF Flanders

    WAREHOUSE DEAL 10x20x1 NaturalAire Standard MERV 8

    $59.99
    $59.99 $90.75
    Case of 11 $5.45/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
  • 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
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