When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

Call Toll-Free: 1-800-277-3458

My Cart:

0 item(s) - $0.00
You have no items in your shopping cart.

FREE SHIPPING on orders over $39

Replacement Water Filters: Undersink

Undersink Water Filters by DiscountFilterStore.com

Items 1 to 25 of 57 total

Page:
  1. 1
  2. 2
  3. 3

Grid  List 

Set Descending Direction
  1. OMB934-1L Omnipure Alpha Series Undersink Filter Replacement Cartridge
  2. FXSLC GE SmartWater Undersink Filter Set

    FXSLC GE SmartWater Undersink Filter Set

    Fits any brand of undersink water filter system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $25.99
  3. WHKF-GAC Whirlpool Undersink Replacement Filter Cartridge
  4. MATRIKX-Pb1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  5. MATRIKX-CTO2-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  6. MATRIKX-5-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge
  7. MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    MATRIKX-1-10 KX Technologies MatrikX Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $10.99
  8. PD-5-934 Pentek Undersink Filter Replacement Cartridge

    PD-5-934 Pentek Undersink Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $5.99
  9. PCC-1 Pentek Undersink Filter Replacement Cartridge
  10. P1 Pentek Whole House Filter Replacement Cartridge

    P1 Pentek Whole House Filter Replacement Cartridge

    Fits any standard housing that uses 9 3/4-inch x 2 1/2-inch replacement filter cartridges Learn More
    $4.99
  11. TSGAC-10 Pentek Undersink Filter Replacement Cartridge
  12. TO1SS OmniFilter Whole House Filter Replacement Cartridge

    TO1SS OmniFilter Whole House Water Filter Replacement Cartridge

    Designed to fit into any brand of whole house water filtration system that accepts standard 9 3/4 x 2 1/2 inch cartridges Learn More
    $5.99
  13. RS7-SS OmniFilter Whole House Filter Replacement Cartridge
  14. RS3-SS OmniFilter Whole House Filter Replacement Cartridge
  15. RS2-SS OmniFilter Whole House Filter Replacement Cartridge
  16. RS14-SS OmniFilter Whole House Filter Replacement Cartridge

    RS14-SS OmniFilter Replacement Whole House Water Filter Cartridge

    Fits any brand of whole house water filter system that uses 9 3/4 x 2 1/2 water filter cartridges Learn More
    $2.99
  17. RS14-DS OmniFilter Whole House Filter Replacement Cartridge (2-Pack)

    RS14-DS OmniFilter Whole House Water Filter Cartridges (2-Pack)

    Fits any brand of whole house water filtration system that uses standard 9 3/4 x 2 1/2 filter cartridges Learn More
    $6.99
  18. P-250A Pentek Undersink Filter Set
  19. C1 Pentek Undersink Filter Replacement Cartridge
  20. CQE-RC-04006 Crystal Quest Fluoride Water Filter

    CQE-RC-04006 Crystal Quest Fluoride Water Filter

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems. Sized 2 7/8 inches by 9 3/4 inches. Learn More
    $52.99
  21. CQE-RC-04003 Crystal Quest Multi Stage ULTRA Water Filter Cartridge

    CQE-RC-04003 Crystal Quest Multi Stage ULTRA Water Filter Cartridge

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems Learn More
    $77.99
  22. CQE-RC-04000 Crystal Quest Carbon Block Water Filter Cartridge

    CQE-RC-04000 Crystal Quest Carbon Block Water Filter Cartridge

    Fits Crystal Quest countertop, undersink and refrigerator water filtration systems Learn More
    $22.99
  23. ECP5-10 Pentek Undersink Filter Replacement Cartridge
  24. CRE-1 Pentek Undersink Filter Replacement Cartridge
  25. CCBC-10 Pentek Undersink Filter Replacement Cartridge