18x27x4 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
18x27x4 MERV8 SpiroPure O
MERV 8 Pleated Filters (6 Pack)
  • $268.40
  • 6 Filters
  • ($44.73 / filters)
MERV 8
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3 Months $178.93

$268.40
6 Filters

($44.73 / filter)
18x27x4 MERV11 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
  • $267.89
  • 6 Filters
  • ($44.65 / filters)
MERV 11
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3 Months $178.59
Best Value!

$267.89
6 Filters

($44.65 / filter)
18x27x4 MERV13 SpiroPure O
MERV 13 Pleated Filters (6 Pack)
  • $301.83
  • 6 Filters
  • ($50.31 / filters)
MERV 13
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3 Months $201.22

$301.83
6 Filters

($50.31 / filter)
18x27x4 OdorBan SpiroPure F
MERV 10 Odor Eliminator Filters (6 Pack)
  • $285.72
  • 6 Filters
  • ($47.62 / filters)
MERV 10
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3 Months Learn more
about odor eliminator filters
$190.48

$285.72
6 Filters

($47.62 / 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.