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Need a different depth?

Same size, deeper filter

Below is 12x25 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.

12x25x2 Shop this size 12x25x4 Built to order

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

  • 16x25x1 NaturalAire Microparticle MERV 10 85256.011625 (6 Filters)
    MERV 10
    AAF Flanders

    16x25x1 NaturalAire Microparticle MERV 10

    $74.99
    $74.99
    Case of 6 $12.50/filter
  • 25x25x1 NaturalAire Microparticle MERV 10 Filters (12 pack)
    MERV 10
    AAF Flanders

    25x25x1 NaturalAire Microparticle MERV 10

    $130.99
    $130.99
    Case of 6 $21.83/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
  • 20x25x5 NaturalAire Optimum Allergen MERV 11 82755.052025 (2 Filters)
    MERV 11
    AAF Flanders

    20x25x5 NaturalAire Optimum Allergen MERV 11

    $145.99
    $145.99
    Case of 2 $73.00/filter
  • 16x25x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    MERV 13
    AAF Flanders

    16x25x1 NaturalAire Healthy Ultra MERV 13

    $181.99
    $181.99
    Case of 12 $15.17/filter
  • 20x25x1 NaturalAire Microparticle MERV 10 85256.012025 (6 Filters)
    MERV 10
    AAF Flanders

    20x25x1 NaturalAire Microparticle MERV 10

    $77.99
    $77.99
    Case of 6 $13.00/filter
  • 20x25x4-1/2 NaturalAire Choice Allergen MERV 8 82655.0452025 (2 Filters)
    MERV 8
    AAF Flanders

    20x25x4-1/2 NaturalAire Choice Allergen MERV 8

    $104.99
    $104.99
    Case of 2 $52.50/filter
  • 20x25x4-1/2 NaturalAire Optimum Allergen MERV 11 82755.052025 (2 Filters)
    MERV 11
    AAF Flanders

    20x25x4-1/2 NaturalAire Optimum Allergen MERV 11

    $145.99
    $145.99
    Case of 2 $73.00/filter
  • 20x25x1 NaturalAire Microparticle MERV 10 85156.012025 (12 Filters)
    MERV 10
    AAF Flanders

    20x25x1 NaturalAire Microparticle MERV 10

    $152.99
    $152.99
    Case of 12 $12.75/filter
  • 25x30x1 NaturalAire Healthy Ultra MERV 13 Filters (12 pack)
    AAF Flanders

    25x30x1 NaturalAire Healthy Ultra MERV 13

    $380.99
    $380.99
    Case of 12 $31.75/filter
  • 15x25x1 NaturalAire Standard MERV 8 Filters (12 pack)
    AAF Flanders

    15x25x1 NaturalAire Standard MERV 8

    $242.99
    $242.99
    Case of 12 $20.25/filter
  • 16x25x5 NaturalAire Choice Allergen MERV 8 82655.051625 (2 Filters)
    MERV 8
    AAF Flanders

    16x25x5 NaturalAire Choice Allergen MERV 8

    $194.99
    $194.99
    Case of 2 $97.50/filter
  • 16x25x3 NaturalAire Choice Allergen MERV 8 82655.031625 (2 Filters)
    MERV 8
    AAF Flanders

    16x25x3 NaturalAire Choice Allergen MERV 8

    $109.99
    $109.99
    Case of 2 $55.00/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
  • 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
  • 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
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