Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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KX Matrikx 20"  L  X  4  1/2" Diameter Extruded Carbon Block Water Filters

KX Matrikx 20" L X 4 1/2" Diameter Extruded Carbon Block Water Filters

KX Matrikx ® 20" Big Blue Replacement Carbon Block Water Filters For Filtration Pure Drinking Water Systems

KX Matrikx Big Blue Water Filters

  1. KX CTO-20BB Matrikx # 32-450-20-Matrikx Big Blue Water Filter
    KX CTO-20BB Matrikx # 32-450-20-Matrikx Big Blue Water Filter

    KX CTO-20BB Matrikx 32-450-20-Matrikx 4¼” X 20” MATRIKX ® CTO® filters, powered by GREENBLOCK®, are made using 100% coconut shell carbon, a renewable, and ecologically sustainable material. The carbon is processed into blocks using a unique binder system and proprietary manufacturing techniques to produce filters with a greater number of micro-pores and available carbon surface area, which display superior capacity kinetic dynamics.

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    $39.99
  2. KX CTO Plus 20BB Matrikx # 01-450-20-Matrikx
    KX CTO Plus 20BB Matrikx # 01-450-20-Matrikx

    KX_CTO-Plus 20"BB Extruded Carbon Block Water Filter Now with enhanced capacity for VOC reduction #01-450-20-Matrikx. 4¼” X 20”

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    $59.99
  3. KX ChloraGuard 20BB Matrikx # 36-450-20-Matrikx Replacement Water Filter
    KX ChloraGuard 20BB Matrikx # 36-450-20-Matrikx Replacement Water Filter

    KX ChloraGuard 20"BB Now with enhanced Chloramine reduction #36-450-20-Matrikx  4½” X 20".  MATRIKX - CHLORAGUARD Activated Carbon Block Filter For Chloramine, Chlorine, Taste, Odor And VOC Reduction.

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    $139.99

Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.





* KX Matrikx is the registered trademark of KX Matrikx, the manufacturer of KX Matrikx brand of under counter drinking water system filtration equipment. The replacement water filter cartridges, reverse osmosis membranes, water tanks, faucets and repair parts listed above are not manufactured or endorsed by KX Matrikx. Rather, these replacement filters, RO reverse osmosis membranes and DIY replacement parts are manufactured by other companies. While these replacement water filters, repair parts and reverse osmosis membranes are compatible for use in KX Matrikx under counter reverse osmosis water filtration equipment, we make no representation as to whether using these water filter cartridges and RO reverse osmosis membranes is consistent with the warranty and specifications applicable to KX Matrikx under sink drinking water system equipment.