11x21x1 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
11x21x1 MERV8 SpiroPure O
MERV 8 Pleated Filters (6 Pack)
    5 stars
  • $98.31
  • 6 Filters
  • ($16.39 / filters)
MERV 8
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3 Months $65.54
Best Value!

$98.31
6 Filters

($16.39 / filter)
11x21x1 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
  • $104.57
  • 6 Filters
  • ($17.43 / filters)
MERV 11
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3 Months $69.71

$104.57
6 Filters

($17.43 / filter)
11x21x1 MERV13 SpiroPure O
MERV 13 Pleated Filters (6 Pack)
  • $127.31
  • 6 Filters
  • ($21.22 / filters)
MERV 13
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3 Months $84.87

$127.31
6 Filters

($21.22 / filter)
11x21x1 OdorBan SpiroPure F
MERV 10 Odor Eliminator Filters (6 Pack)
  • $102.00
  • 6 Filters
  • ($17.00 / filters)
MERV 10
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3 Months Learn more
about odor eliminator filters
$68.00

$102.00
6 Filters

($17.00 / 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.