19.75" x 19.5" x 4.5"

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• 

  20″ x 20″ x 5″ MERV 11 Replacement Air Filter

  Lennox

  SKU: X0585

  $52.00
  MSRP: $59.80

  You save 15%
  - Lennox X0585 20x20x5 MERV 11 Media Filter quantity +

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• 

  20″ x 20″ x 5″ MERV 16 Replacement Air Filter

  Lennox

  SKU: X7935

  $172.40
  MSRP: $198.26

  You save 15%
  - Lennox X7935 20x20x5 MERV 16 Replacement Air Filter quantity +

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