21x30x1 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
21x30x1 MERV8 SpiroPure O
MERV 8 Pleated Filters (6 Pack)
    5 stars
  • $157.46
  • 6 Filters
  • ($26.24 / filters)
MERV 8
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3 Months $104.97
Best Value!

$157.46
6 Filters

($26.24 / filter)
21x30x1 MERV11 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
  • $169.54
  • 6 Filters
  • ($28.26 / filters)
MERV 11
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3 Months $113.03

$169.54
6 Filters

($28.26 / filter)
21x30x1 MERV13 SpiroPure O
MERV 13 Pleated Filters (6 Pack)
  • $190.71
  • 6 Filters
  • ($31.79 / filters)
MERV 13
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3 Months $127.14

$190.71
6 Filters

($31.79 / filter)
21x30x1 OdorBan SpiroPure F
MERV 10 Odor Eliminator Filters (6 Pack)
  • $231.30
  • 6 Filters
  • ($38.55 / filters)
MERV 10
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3 Months Learn more
about odor eliminator filters
$154.20

$231.30
6 Filters

($38.55 / 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.