18x24x1 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
MERV 8 18x24x1 SpiroPure O
MERV 8 18x24x1 Filters (Nominal Size)
    5 stars
  • $37.99
  • 6 Filters
  • ($6.33/filter)
MERV 8
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3 Months $25.33/yr

$37.99
6 Filters

($6.33/filter)
18x24x1 MERV8 SpiroPure O
MERV 8 18x24x1 Filters (Actual Size)
  • $70.99
  • 6 Filters
  • ($11.83/filter)
MERV 8
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3 Months $47.33/yr

$70.99
6 Filters

($11.83/filter)
18x24x1 MERV8 SpiroPure O
MERV 8 18x24x1 Filters (Nominal Size)
  • $71.99
  • 12 Filters
  • ($6.00/filter)
MERV 8
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3 Months $24.00/yr
Best Value!

$71.99
12 Filters

($6.00/filter)
MERV 11 18x24x1 SpiroPure O
MERV 11 18x24x1 Filters (Nominal Size)
    5 stars
  • $43.99
  • 6 Filters
  • ($7.33/filter)
MERV 11
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3 Months $29.33/yr

$43.99
6 Filters

($7.33/filter)
18x24x1 MERV11 SpiroPure O
MERV 11 18x24x1 Filters (Actual Size)
  • $85.99
  • 6 Filters
  • ($14.33/filter)
MERV 11
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3 Months $57.33/yr

$85.99
6 Filters

($14.33/filter)
18x24x1 MERV11 SpiroPure O
MERV 11 18x24x1 Filters (Nominal Size)
    5 stars
  • $87.99
  • 12 Filters
  • ($7.33/filter)
MERV 11
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3 Months $29.33/yr

$87.99
12 Filters

($7.33/filter)
MERV 13 18x24x1 SpiroPure O
MERV 13 18x24x1 Filters (Nominal Size)
    4.5 stars
  • $50.99
  • 6 Filters
  • ($8.50/filter)
MERV 13
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3 Months $33.99/yr

$50.99
6 Filters

($8.50/filter)
18x24x1 MERV13 SpiroPure O
MERV 13 18x24x1 Filters (Actual Size)
  • $99.99
  • 6 Filters
  • ($16.67/filter)
MERV 13
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3 Months $66.66/yr

$99.99
6 Filters

($16.67/filter)
18x24x1 MERV13 SpiroPure O
MERV 13 18x24x1 Filters (Nominal Size)
  • $100.99
  • 12 Filters
  • ($8.42/filter)
MERV 13
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3 Months $33.66/yr

$100.99
12 Filters

($8.42/filter)
18x24x1 Odor Eliminator SpiroPure F
Odor Eliminator 18x24x1 Filters (Nominal Size)
  • $65.99
  • 6 Filters
  • ($11.00/filter)
MERV 10
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3 Months Learn more
about odor eliminator filters
$43.99/yr

$65.99
6 Filters

($11.00/filter)
18x24x1 OdorBan SpiroPure F
Odor Eliminator 18x24x1 Filters (Actual Size)
  • $99.99
  • 6 Filters
  • ($16.67/filter)
MERV 10
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3 Months Learn more
about odor eliminator filters
$66.66/yr

$99.99
6 Filters

($16.67/filter)
18x24x1 OdorBan SpiroPure F
Odor Eliminator 18x24x1 Filters (Nominal Size)
  • $119.99
  • 12 Filters
  • ($10.00/filter)
MERV 10
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3 Months Learn more
about odor eliminator filters
$40.00/yr

$119.99
12 Filters

($10.00/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.