30x30x1 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
MERV8 30x30x1 SpiroPure O
MERV 8 Geothermal Filters (6 Pack)
    5 stars
  • $93.99
  • 6 Filters
  • ($15.67 / filters)
MERV 8
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3 Months $62.66
Best Value!

$93.99
6 Filters

($15.67 / filter)
MERV11 30x30x1 SpiroPure O
MERV 11 Geothermal Filters (6 Pack)
    5 stars
  • $104.99
  • 6 Filters
  • ($17.50 / filters)
MERV 11
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3 Months $69.99

$104.99
6 Filters

($17.50 / filter)
MERV13 30x30x1 SpiroPure O
MERV 13 Geothermal Filters (6 Pack)
  • $112.99
  • 6 Filters
  • ($18.83 / filters)
MERV 13
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3 Months $75.33

$112.99
6 Filters

($18.83 / 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.