9x20x4 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
9x20x4 MERV8 SpiroPure O
MERV 8 Pleated Filters (6 Pack)
  • $129.75
  • 6 Filters
  • ($21.63 / filters)
MERV 8
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3 Months $86.50
Best Value!

$129.75
6 Filters

($21.63 / filter)
9x20x4 MERV11 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
  • $162.77
  • 6 Filters
  • ($27.13 / filters)
MERV 11
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3 Months $108.51

$162.77
6 Filters

($27.13 / filter)
9x20x4 MERV13 SpiroPure O
MERV 13 Pleated Filters (6 Pack)
  • $177.78
  • 6 Filters
  • ($29.63 / filters)
MERV 13
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3 Months $118.52

$177.78
6 Filters

($29.63 / filter)
9x20x4 OdorBan SpiroPure F
MERV 10 Odor Eliminator Filters (6 Pack)
  • $183.66
  • 6 Filters
  • ($30.61 / filters)
MERV 10
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3 Months Learn more
about odor eliminator filters
$122.44

$183.66
6 Filters

($30.61 / filter)
MERV Rating - Contaminant Removal Guide
MERV Rating   8 11 12 13
Lint & Dust  
Dust Mite Debris  
Pollen  
Mold Spores  
Pet Dander  
Auto Emissions  
Smoke  
Tobacco  
Bacteria  
Note: equals efficient removal of contaminant by filter.