30x36x2 Geothermal Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
30x36x2 MERV8 SpiroPure O
MERV 8 Geothermal Filters (Nominal Size)
    5 stars
  • $129.77
  • 6 Filters
  • ($21.63 / filters)
MERV 8
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3 Months $86.51
Best Value!

$129.77
6 Filters

($21.63 / filter)
MERV 11 30x36x2 SpiroPure O
MERV 11 Geothermal Filters (Nominal Size)
    5 stars
  • $141.10
  • 6 Filters
  • ($23.52 / filters)
MERV 11
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3 Months $94.07

$141.10
6 Filters

($23.52 / filter)
30x36x2 MERV13 SpiroPure O
MERV 13 Geothermal Filters (Nominal Size)
    5 stars
  • $174.06
  • 6 Filters
  • ($29.01 / filters)
MERV 13
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3 Months $116.04

$174.06
6 Filters

($29.01 / 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.