21x24.5x4.5 Rheem / Ruud Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
21x24.5x4.5 Rheem Ruud MERV8 SpiroPure F
Rheem / Ruud Compatible (MERV 8)
    5 stars
  • $55.99
  • 2 Filters
  • ($28.00/filter)
MERV 8
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6 Months $55.99/yr
Best Value!

$55.99
2 Filters

($28.00/filter)
21x24.5x4.5 Rheem Ruud MERV11 SpiroPure F
Rheem / Ruud Compatible (MERV 11)
    4.5 stars
  • $69.99
  • 2 Filters
  • ($35.00/filter)
MERV 11
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6 Months $69.99/yr

$69.99
2 Filters

($35.00/filter)
21x24.5x4.5 Rheem Ruud MERV13 SpiroPure F
Rheem / Ruud Compatible (MERV 13)
  • $81.99
  • 2 Filters
  • ($41.00/filter)
MERV 13
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6 Months $81.99/yr

$81.99
2 Filters

($41.00/filter)
21x24.5x4.5 Rheem Ruud OdorBan SpiroPure F
Rheem / Ruud Compatible (OdorBan)
    5 stars
  • $104.99
  • 2 Filters
  • ($52.50/filter)
MERV 10
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6 Months Learn more
about odor eliminator filters
$104.99/yr

$104.99
2 Filters

($52.50/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.