Search Results for '20 x 20 x 4 furnace filter'

• 

  20x20x4 AIRx ALLERGY Air Filter - MERV 11, 6-Pack

  $26.49 / Filter

  

  63 review(s)

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  Average rating 4.6/5

  5 stars

  (48)

  4 stars

  (10)

  3 stars

  (2)

  2 stars

  (1)

  1 star

  (2)

  in stock
• 

  20x20x4 AIRx HEALTH Air Filter - MERV 13, 6-Pack

  $30.49 / Filter

  

  25 review(s)

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  Average rating 4.7/5

  5 stars

  (20)

  4 stars

  (2)

  3 stars

  (3)

  2 stars

  (0)

  1 star

  (0)

  in stock
• 

  20x20x4 AIRx DUST Air Filter - MERV 8, 6-Pack

  $24.49 / Filter

  

  24 review(s)

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  Average rating 4.6/5

  5 stars

  (20)

  4 stars

  (1)

  3 stars

  (1)

  2 stars

  (1)

  1 star

  (1)

  in stock
• 

  20x20x4 AIRx HEALTH Air Filter - MERV 13 2-Pack

  $32.49 / Filter

  

  7 review(s)

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  Average rating 4.4/5

  5 stars

  (6)

  4 stars

  (0)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (1)

  in stock
• 

  20x20x4 AIRx ALLERGY Air Filter - MERV 11, 2-Pack

  $28.49 / Filter

  

  12 review(s)

  ◆

   

  Average rating 4.6/5

  5 stars

  (10)

  4 stars

  (1)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (1)

  in stock
• 

  20x20x4 AIRx DUST Air Filter - MERV 8 2-Pack

  $25.49 / Filter

  

  8 review(s)

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  Average rating 4.3/5

  5 stars

  (6)

  4 stars

  (0)

  3 stars

  (1)

  2 stars

  (0)

  1 star

  (1)

  in stock