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Drop-in Water Filter Cartridges

Drop-in Water Filter Cartridges

About Drop-in Water Filter Cartridges

  • Use our drop-in water filter cartridges to complete your whole house water filter system and enjoy filtered water throughout the home while helping extend the life of your water using appliances.


Standard Diameter Drop-in Cartridges

    • For use in the whole house AP100 series housings as well as the standard and large diameter stainless steel housings
    • All 1-high's sold in 2 packs
    • AP110 and 124 also available as a 2 high
    • Standard diameter is 2.5"

Specialty Standard Diameter Drop-in Cartridges

    • For use in the whole house AP100 series housings as well as the standard and large diameter stainless steel housings
    • All sold in 2 packs
    • Specialty standard diameter is 3.0"

Large Diameter Drop-in Cartridges

    • For use in the AP800 Series
    • All sold as individual cartridge
    • All large diameter cartridges also available as a 2 high
    • Large diameter is 4.5"
  • *As tested and verified by manufacturer's laboratory.


Looking for More Information About Drop-In Cartridges?
  • Product Guide
    Browse 3M Residential Water Filter Product Line
  • Resource Library
    Under Sink Water Filtration Resources

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