Discount Water Filters and Air Filters at Discount Filter Store.com

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4" Depth Air Filters

From basic to elite, air filters with a 4-inch depth are available in five different levels of air purification. All filters with a “basic” rating are capable of trapping lint, dust, dander, mold spores and pollen, but the higher the quality level, the more air contaminants filtered out. Use comparison chart below to review the different quality levels available for filters with a 4-inch depth.
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  • 3M Filtrete 1550 Allergen Reduction Air Filter - 20x25x4 (4-Pack)

    1550 3M Filtrete Allergen Reduction Air Filters - 20x25x4

    $165.99
    MSRP: $170.19
    Save 2%
  • Tier1 600 Air Filter - 24x24x4 (6-Pack)

    24x24x4 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    $103.99
    MSRP: $106.34
    Save 2%
  • Tier1 600 Air Filter - 20x25x4 (6-Pack)

    20x25x4 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    $83.99
    MSRP: $86.34
    Save 3%
  • Tier1 600 Air Filter - 16x20x4 (6-Pack)

    16x20x4 Merv 8 Universal Air Filter By Tier1 (6-Pack)

    $72.99
    MSRP: $75.34
    Save 3%
  • Tier1 1900 Air Filter - 24x24x4 (6-Pack)

    24x24x4 Merv 13 Universal Air Filter By Tier1 (6-Pack)

    $164.99
    MSRP: $167.34
    Save 1%
  • Tier1 1900 Air Filter - 20x25x4 (6-Pack)

    20x25x4 Merv 13 Universal Air Filter By Tier1 (6-Pack)

    $136.99
    MSRP: $179.99
    Save 24%
  • Tier1 1900 Air Filter - 16x20x4 (6-Pack)

    16x20x4 Merv 13 Universal Air Filter By Tier1 (6-Pack)

    $106.99
    MSRP: $109.34
    Save 2%
  • Tier1 1500 Air Filter - 24x24x4 (6-Pack)

    24x24x4 Merv 11 Universal Air Filter By Tier1 (6-Pack)

    $129.99
    MSRP: $132.34
    Save 2%
  • Tier1 1500 Air Filter - 20x25x4 (6-Pack)

    20x25x4 Merv 11 Universal Air Filter By Tier1 (6-Pack)

    $90.99
    MSRP: $93.34
    Save 3%

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