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13x21x1 Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
MERV8 13x21x1 SpiroPure O
MERV 8 Pleated Filters (6 Pack)
  • $61.99
  • 6 Filters
  • ($10.33/filter)
MERV 8
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3 Months $41.33/yr
Best Value!

$61.99
6 Filters

($10.33/filter)
MERV11 13x21x1 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
  • $73.99
  • 6 Filters
  • ($12.33/filter)
MERV 11
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3 Months $49.33/yr

$73.99
6 Filters

($12.33/filter)
MERV13 13x21x1 SpiroPure F
MERV 13 Pleated Filters (6 Pack)
  • $74.99
  • 6 Filters
  • ($12.50/filter)
MERV 13
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3 Months $49.99/yr

$74.99
6 Filters

($12.50/filter)
Odorban 13x21x1 SpiroPure F
MERV 8 Odor Eliminator Filters (6 Pack)
  • $68.99
  • 6 Filters
  • ($11.50/filter)
MERV 8
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3 Months Learn more
about odor eliminator filters
$45.99/yr

$68.99
6 Filters

($11.50/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.