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)
  • $85.99
  • 6 Filters
  • ($14.33/filter)
MERV 8
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3 Months $57.33/yr
Best Value!

$85.99
6 Filters

($14.33/filter)
9x20x4 MERV11 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
  • $101.99
  • 6 Filters
  • ($17.00/filter)
MERV 11
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3 Months $67.99/yr

$101.99
6 Filters

($17.00/filter)
9x20x4 MERV13 SpiroPure F
MERV 13 Pleated Filters (6 Pack)
  • $92.99
  • 6 Filters
  • ($15.50/filter)
MERV 13
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3 Months $61.99/yr

$92.99
6 Filters

($15.50/filter)
9x20x4 OdorBan SpiroPure F
MERV 8 Odor Eliminator Filters (6 Pack)
  • $89.99
  • 6 Filters
  • ($15.00/filter)
MERV 8
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3 Months Learn more
about odor eliminator filters
$59.99/yr

$89.99
6 Filters

($15.00/filter)
MERV Rating - Contaminant Removal Guide
MERV Rating   8 11 12 13
Lint & Dust  
Dust Mile Debris  
Pollen  
Mold Spores  
Pet Dander  
Auto Emissions  
Smoke  
Tobacco  
Bacteria  
Note: equals efficient removal of contaminant by filter.