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18.125x21.375x2 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
18.125x21.375x2 MERV8 SpiroPure O
MERV 8 Pleated Filters (6 Pack)
  • $71.99
  • 6 Filters
  • ($12.00/filter)
MERV 8
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3 Months $47.99/yr
Best Value!

$71.99
6 Filters

($12.00/filter)
18.125x21.375x2 MERV11 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
  • $81.99
  • 6 Filters
  • ($13.67/filter)
MERV 11
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3 Months $54.66/yr

$81.99
6 Filters

($13.67/filter)
18.125x21.375x2 MERV13 SpiroPure O
MERV 13 Pleated Filters (6 Pack)
  • $96.99
  • 6 Filters
  • ($16.17/filter)
MERV 13
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3 Months $64.66/yr

$96.99
6 Filters

($16.17/filter)
18.125x21.375x2 OdorBan SpiroPure F
MERV 8 Odor Eliminator Filters (6 Pack)
  • $91.99
  • 6 Filters
  • ($15.33/filter)
MERV 8
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3 Months Learn more
about odor eliminator filters
$61.33/yr

$91.99
6 Filters

($15.33/filter)
MERV Rating - Contaminant Removal Guide
MERV Rating   8 11 12 13
Lint & Dust  
Dust Mile Debris  
Pollen  
Mold Spores  
Pet Dander  
Auto Emissions  
Smoke  
Tobacco  
Bacteria  
Note: equals efficient removal of contaminant by filter.