Replacement water filters, RO reverse osmosis membranes and whole house filter systems. Refrigerator water filters, pool and spa filter. Pentek, OMNIFILTER water filters.

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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.

LOW PRICES and FAST SHIPPING ONLINE SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

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$29.99
  • Buy 2 for $27.99 each and save 7%
  • Buy 4 for $26.99 each and save 10%
  • Buy 9 for $25.99 each and save 13%
In stock

KX has updated this filter.  Order the new replacement here.  

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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KX has updated this filter.  Order the new replacement here.  

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.

Matrikx CTO Replacement Water Filter Spec Sheet (258.41 kB)
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Related Categories

Big Blue Water Filters ®

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

10" x 4 1/2" Big Blue Carbon Block Replacement Water Filters