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Need a different depth?

Same size, deeper filter

Below is 25x25 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.

25x25x2 Shop this size 25x25x4 Built to order

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

  • 29-1/2x19-1/2x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    29-1/2x19-1/2x1 NaturalAire Standard MERV 8

    $283.99
    $283.99
    Case of 12 $23.67/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
  • 16x24x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    16x24x1 NaturalAire Microparticle MERV 10

    $175.99
    $175.99
    Case of 12 $14.67/filter
  • 22x22x1 NaturalAire Standard MERV 8 84858.012222 (12 Filters)
    MERV 8
    AAF Flanders

    22x22x1 NaturalAire Standard MERV 8

    $155.99
    $155.99
    Case of 12 $13.00/filter
  • 20x20x1 NaturalAire Microparticle MERV 10 85156.012020 (12 Filters)
    MERV 10
    AAF Flanders

    20x20x1 NaturalAire Microparticle MERV 10

    $140.99
    $140.99
    Case of 12 $11.75/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
  • 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
  • 17.5x23.5x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    17-1/2x23-1/2x1 NaturalAire Microparticle MERV 10

    $259.99
    $259.99
    Case of 12 $21.67/filter
  • 21x22x1 NaturalAire Odor Eliminator with Baking Soda MERV 8 air filter
    MERV 8
    AAF Flanders

    21x22x1 NaturalAire Odor Eliminator with Baking Soda MERV 8

    $122.99
    $122.99
    Case of 4 $30.75/filter
  • 12x12x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    12x12x1 NaturalAire Healthy Ultra MERV 13

    $233.99
    $233.99
    Case of 12 $19.50/filter
  • 22x22x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    22x22x1 NaturalAire Healthy Ultra MERV 13

    $213.99
    $213.99
    Case of 12 $17.83/filter
  • 25x25x1 Flanders Nested Glass EZ-Green Filter 10059.012525 (24 Filters)
    Contact Support
    AAF Flanders

    25x25x1 Flanders Nested Glass EZ-Green Filter

    $124.99
    $124.99
    Case of 24 $5.21/filter
  • 14x24x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    14x24x1 NaturalAire Healthy Ultra MERV 13

    $248.99
    $248.99
    Case of 12 $20.75/filter
  • PrimeShield Enhanced MERV 10 Pleated Air Filters (12 Pack)
    MERV 10
    RTF

    PrimeShield Enhanced MERV 10 Pleated Air Filters

    From $99.99
    From $99.99
    Case of 12 $8.33/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
  • 12x24x1 NaturalAire Healthy Ultra MERV 13 95003.011224 (12 Filters)
    MERV 13
    AAF Flanders

    12x24x1 NaturalAire Healthy Ultra MERV 13

    $174.99
    $174.99
    Case of 12 $14.58/filter
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