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Air Filters: 4-inch Size

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  • TIER1-RAF-A401

    TIER1-RAF-A401

  • TIER1-RAF-A201

    TIER1-RAF-A201

  • 210 Aprilaire Air Purifier Replacement Filter by Tier1 (2-Pack)
  • 213 Aprilaire Air Purifier Replacement Filter by Tier1 (2-Pack)
  • 410 Aprilaire Air Purifier Replacement Filter by Tier1 (2 Pack)
  • Tier1_AF413_2pk_closed

    Air Purifier 413 Replacement Filter by Tier1 (2-Pack)

    $62.99 Retail Price:  $82.99
  • 201 Aprilaire Comparable Replacement for 20 x 25 x 6-MERV 11 Air Filter by Tier1 (2-Pack)
  • 401 Aprilaire Comparable Replacement by Tier1 (2-Pack)

    401 Aprilaire Comparable Replacement by Tier1 (2-Pack)

    $37.99 Retail Price:  $50.99

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