18x24x4 Air Filters

Sort by:
Products   MERV Rating Filter Life Annual Cost Value Pack
MERV8 18x24x4 SpiroPure O
MERV 8 Pleated Filters (6 Pack)
  • $90.99
  • 6 Filters
  • ($15.17 / filters)
MERV 8
Learn more
3 Months $60.66
Best Value!

$90.99
6 Filters

($15.17 / filter)
MERV11 18x24x4 SpiroPure O
MERV 11 Pleated Filters (6 Pack)
    5 stars
  • $111.99
  • 6 Filters
  • ($18.67 / filters)
MERV 11
Learn more
3 Months $74.66

$111.99
6 Filters

($18.67 / filter)
MERV13 18x24x4 SpiroPure O
MERV 13 Pleated Filters (6 Pack)
  • $136.99
  • 6 Filters
  • ($22.83 / filters)
MERV 13
Learn more
3 Months $91.33

$136.99
6 Filters

($22.83 / filter)
odor eliminator 18x24x4 SpiroPure F
MERV 10 Odor Eliminator Filters (6 Pack)
  • $149.99
  • 6 Filters
  • ($25.00 / filters)
MERV 10
Learn more
3 Months Learn more
about odor eliminator filters
$99.99

$149.99
6 Filters

($25.00 / 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.