Search Results for '20 x 18'

• 

  18x24x1 AIRx DUST Air Filter, 6-Pack

  $9.49 / Filter

  

  77 review(s)

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  Average rating 4.9/5

  5 stars

  (70)

  4 stars

  (5)

  3 stars

  (1)

  2 stars

  (0)

  1 star

  (1)

  in stock
• 

  20x21x5 AIRx ALLERGY Replacement for Lennox X8790 Air Filter - MERV 11

  $67.41 / Filter

  1 Week to Ship
• 

  18x25x1 AIRx ALLERGY Air Filter - MERV 11

  $14.49 / Filter

  

  11 review(s)

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  Average rating 4.6/5

  5 stars

  (8)

  4 stars

  (2)

  3 stars

  (1)

  2 stars

  (0)

  1 star

  (0)

  in stock
• 

  16x20x1 AIRx High Flow Air Filter, 12-Pack

  $13.49 / Filter

  in stock
• 

  20x36x3 MERV 11 Return Air Grille Filter, 2-Pack

  $53.44 / Filter

  2-3 Weeks to Ship
• 

  16x20x3 MERV 11 Return Air Grille Filter, 2-Pack

  $43.77 / Filter

  3-4 Weeks to Ship
• 

  18x18x1 AIRx HEALTH Air Filter - MERV 13

  $17.49 / Filter

  

  18 review(s)

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  Average rating 4.5/5

  5 stars

  (12)

  4 stars

  (4)

  3 stars

  (1)

  2 stars

  (1)

  1 star

  (0)

  in stock
• 

  18x20x1 AIRx DUST Air Filter, 6-Pack

  $10.49 / Filter

  

  93 review(s)

  ◆

   

  Average rating 4.8/5

  5 stars

  (74)

  4 stars

  (18)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (1)

  in stock
• 

  18x24x3 MERV 11 Return Air Grille Filter, 2-Pack

  $43.77 / Filter

  3-4 Weeks to Ship
• 

  18" X 20" X 1" Lifetime Permanent Washable Filter

  $56.95 / Filter

  

  8 review(s)

  ◆

   

  Average rating 4.3/5

  5 stars

  (5)

  4 stars

  (2)

  3 stars

  (0)

  2 stars

  (0)

  1 star

  (1)

  in stock
• 

  20" X 37" X 2" MERV 11 Pleated Filter For Geothermal Systems

  $27.00 / Filter

  6-8 Weeks To Ship
• 

  16x18x1 AIRx DUST Air Filter - MERV 8

  $11.49 / Filter

  

  10 review(s)

  ◆

   

  Average rating 4.6/5

  5 stars

  (7)

  4 stars

  (2)

  3 stars

  (1)

  2 stars

  (0)

  1 star

  (0)

  in stock