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 10" L  X  4  1/2" Diameter Extruded Carbon Block Water Filters

KX Matrikx 10" L X 4 1/2" Diameter Extruded Carbon Block Water Filters

KX Matrikx ® 10" Big Blue Replacement Carbon Block Water Filters For Filtration Pure Drinking Water Systems

KX Matrikx Big Blue Water Filters

  1. KX Matrikx ® CR1 20 Inch Carbon Block Water Filter # 19-250-125-20
    KX Matrikx ® CR1 20 Inch Carbon Block Water Filter # 19-250-125-20
    KX Matrikx ® CR1 # 19-250-125-20 1 Micron 20" Extruded Carbon Block Water Filter. Cyst and Cryptosporidium Reduction. 20" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 20 per case, sold individually. Order a case and save even more.
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    $39.99 Special Price $29.99
  2. KX Matrikx ® Plus1 20 Inch Carbon Block Water Filter # 01-250-125-20
    KX Matrikx ® Plus1 20 Inch Carbon Block Water Filter # 01-250-125-20
    KX Matrikx ® Plus1 # 01-250-125-20 .6 Micron 20" Extruded Carbon Block Water Filter. 20" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 20 per case, sold individually. Order a case and save even more.
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    $39.99 Special Price $29.99 As low as $26.99
  3. KX Matrikx ® +5/VOC 20 Inch Carbon Block Water Filter # 02-250-125-20
    KX Matrikx ® +5/VOC 20 Inch Carbon Block Water Filter # 02-250-125-20
    KX Matrikx ® +5/VOC 20 Inch # 02-250-125-20 2 Micron 20" Extruded Carbon Block Water Filter with coconut shell for best taste. 20" long X 2 1/2" diameter OD X 1 1/4" diameter ID. DISCONTINUED 3 IN STOCK OF THE US MADE FILTERS.
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    $39.99 Special Price $29.99 As low as $28.99
  4. KX Matrikx ® PB1-20 Matrikx 20 Inch Carbon Block Replacement Water Filter # 06-250-20 Matrikx
    KX Matrikx ® PB1-20 Matrikx 20 Inch Carbon Block Replacement Water Filter # 06-250-20 Matrikx

    KX Matrikx ® PB1-20-Matrikx # 06-250-20-Matrikx 0.5 Micron 20' Extruded Carbon Block Water Filter. Lead, Cyst, Giardia and Crytosporidim Reduction. 20" long X 2 1/2" diameter OD X 1 1/4" diameter ID. 20 per case, sold individually. Order a case and save even more.

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    $44.99 Special Price $32.99 As low as $26.99
  5. KX ChloraGuard-20 Matrikx# 36-250-20-Matrikx Replacement Water Filter
    KX ChloraGuard-20 Matrikx# 36-250-20-Matrikx Replacement Water Filter

    KX ChloraGuard 20 Now with enhanced Chloramine reduction #36-250-20-Matrikx 2¾” X 20"

    2¾” X 20” Matrikx® ChloraGuard® filters, powered by GreenBlock® are made from 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, wihch display superior absorption capacity and kinetic dynamics.

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    $39.99
  6. KX CTO-20 Matrikx # 32-250-20-Matrikx Replacement Water Filter
    KX CTO-20 Matrikx # 32-250-20-Matrikx Replacement Water Filter

    KX_CTO-20-Matrikx 32-250-20-Matrikx 2½” 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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    $16.99
  7. KX CTO Plus 20 Matrikx # 01-250-20  Matrikx Replacement Water Filter
    KX CTO Plus 20 Matrikx # 01-250-20 Matrikx Replacement Water Filter

    KX_CTO-Plus 20-Matrikx Extruded Carbon Block Water Filter. Now with enhanced capacity for VOC reduction #01-250-20-Matrikx. 2½” X 20”

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    $29.99
  8. KX Matrikx ® +1 Big Blue Carbon Block Water Filter # 01-425-125-975
    KX Matrikx ® +1 Big Blue Carbon Block Water Filter # 01-425-125-975
    KX Matrikx ® +1 # 01-425-125-975 .6 Micron Big Blue Extruded Carbon Block Water Filter. 9 3/4" long X 4 1/2" diameter . 9 per case, sold individually. Order a case and save even more.
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    $47.99 Special Price $34.99 As low as $29.99
  9. KX Matrikx ® +CTO/2 Big Blue Carbon Block Water Filter # 03-425-125-975 & 32-425-125-975
    KX Matrikx ® +CTO/2 Big Blue Carbon Block Water Filter # 03-425-125-975 & 32-425-125-975
    KX Matrikx ® +CTO/2 # 03-425-125-975 & 32-425-125-975 5 Micron Big Blue Extruded Carbon Block Water Filter. 9 3/4" long X 4 1/2" diameter . 9 per case, sold individually. Order a case and save even more.
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    $39.99 Special Price $29.99 As low as $25.99
  10. KX Matrikx ® PB1 Big Blue Carbon Block Water Filter # 06-425-200-975
    KX Matrikx ® PB1 Big Blue Carbon Block Water Filter # 06-425-200-975
    KX Matrikx ® PB1 # 06-425-200-975 .5 Micron Big Blue Extruded Carbon Block Water Filter. Lead, Cyst, Giardia and Crytosporidim Reduction. 9 3/4" long X 4 1/2" diameter . 9 per case, sold individually. Order a case and save even more.
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    $69.99 Special Price $54.99 As low as $47.99
  11. KX CTO-10BB Matrikx # 32-450-10 Matrikx Big Blue Replacement Water Filter
    KX CTO-10BB Matrikx # 32-450-10 Matrikx Big Blue Replacement Water Filter

    KX_CTO-10BB-Matrikx 32-450-10-Matrikx 4¼” X 9¾” 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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    $19.99
  12. KX Matrikx ® PB1-10BB-Matrikx Big Blue Carbon Block Water Filter # 06-450-10-Matrikx
    KX Matrikx ® PB1-10BB-Matrikx Big Blue Carbon Block Water Filter # 06-450-10-Matrikx

    KX Matrikx ® PB1-10BB-Matrikx# 06-450-10-Matrikx.5 Micron Big Blue Extruded Carbon Block Water Filter. Lead, Cyst, Giardia and Crytosporidim Reduction. 9 3/4" long X 4 1/2" diameter . 9 per case, sold individually. Order a case and save even more.

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    $69.99 Special Price $54.99 As low as $47.99
  13. KX ChloraGuard-10BB Matrikx # 36-450-10-Matrikx Big Blue
    KX ChloraGuard-10BB Matrikx # 36-450-10-Matrikx Big Blue

    KX ChloraGuard 10"BB Now with enhanced Chloramine reduction #36-450-10-Matrikx. MATRIKX - CHLORAGUARD Activated Carbon Block Filter For Chloramine, Chlorine, Taste, Odor And VOC Reduction.

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    $59.99

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.