Search Results for '21 x 18'

• 

  Neo-Pure Replacement for Aqua-Pure® AP217 Filter, 4-Pack

  $22.95 / Filter

  

  6 review(s)

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  Average rating 3.0/5

  5 stars

  (1)

  4 stars

  (2)

  3 stars

  (1)

  2 stars

  (0)

  1 star

  (2)

  In Stock
• 

  Neo-Pure Replacement for Aqua-Pure® AP217 Filter

  $26.95 / Filter

  

  5 review(s)

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  Average rating 5.0/5

  5 stars

  (5)

  4 stars

  (0)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (0)

  In Stock
• 

  Fiberglass 18" X 20" X 1" Panel Filter - Equipment Protection

  $5.12 / Filter

  

  12 review(s)

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  Average rating 4.8/5

  5 stars

  (10)

  4 stars

  (2)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (0)

  in stock
• 

  20x21x5 AIRx HEALTH White Rodgers FR1600-100 Replacement Air Filter - MERV 13

  $64.44 / Filter

  

  3 review(s)

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  Average rating 3.3/5

  5 stars

  (1)

  4 stars

  (1)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (1)

  1 Week to Ship
• 

  Fiberglass 18" X 24" X 1" Panel Filter - Equipment Protection

  $5.55 / Filter

  

  11 review(s)

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  Average rating 3.9/5

  5 stars

  (7)

  4 stars

  (1)

  3 stars

  (0)

  2 stars

  (1)

  1 star

  (2)

  in stock
• 

  Trane/American Standard PERFECT FIT Air Filter (BAYFTFR21P4)

  $22.18 / Filter

  

  2 review(s)

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  Average rating 5.0/5

  5 stars

  (2)

  4 stars

  (0)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (0)

  In Stock
• 

  18x30x1 AIRx ALLERGY Air Filter, 12-Pack

  $14.49 / Filter

  

  2 review(s)

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  Average rating 4.5/5

  5 stars

  (1)

  4 stars

  (1)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (0)

  in stock
• 

  Fiberglass 18" X 25" X 1" Panel Filter - Equipment Protection

  $5.95 / Filter

  

  4 review(s)

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  Average rating 3.5/5

  5 stars

  (2)

  4 stars

  (0)

  3 stars

  (1)

  2 stars

  (0)

  1 star

  (1)

  in stock
• 

  18x25x1 AIRx DUST Air Filter - MERV 8

  $9.49 / Filter

  

  1 review(s)

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  Average rating 5.0/5

  5 stars

  (1)

  4 stars

  (0)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (0)

  in stock
• 

  Fiberglass 18" X 18" X 1" Panel Filter - Equipment Protection

  $5.12 / Filter

  

  11 review(s)

  ◆

   

  Average rating 3.9/5

  5 stars

  (7)

  4 stars

  (0)

  3 stars

  (2)

  2 stars

  (0)

  1 star

  (2)

  in stock
• 

  16x21x5 AIRx DUST White Rodgers FR1000-100 Replacement Air Filter - MERV 8

  $50.28 / Filter

  1 Week to Ship
• 

  18x30x1 AIRx DUST Air Filter, 12-Pack

  $12.49 / Filter

  

  7 review(s)

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  Average rating 4.1/5

  5 stars

  (5)

  4 stars

  (0)

  3 stars

  (1)

  2 stars

  (0)

  1 star

  (1)

  in stock