20" Big Blue | KX MATRIKX CTO Carbon Block Filter | 5 Micron

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Brand KX Technologies

kx technologies  KX MATRIKX CTO Filters Carbon Block Water Filter
KX MATRIKX CTO Carbon Filter for Chlorine Taste and Odor Reduction

20 Inch Big Blue Size | 32-450-20-MATRIKX | 5 Micron | Replaces 32-450-20-GREEN & 32-425-125-20

KX MATRIKX CTO® filters are optimized for applications where they perform the role of both a sediment and activated carbon filter for chlorine taste and odor reduction. These filters are known industry-wide for superior performance. 5 Micron Nominal Filtration Rating (10 Micron Absolute Filtration Rating).

KX MATRIKX 32-450-20-MATRIKX is the factory recommended direct replacement for 32-450-20-GREEN and 32-425-125-20, which have both been discontinued by the manufacturer.

Matrikx® CTO® Carbon block filters are now rated for Cloramine reduction.

  • Chlorine and Chloramine Reduction
  • 5 micron nominal filtration reduces sand, rust, and sediment.
  • Exceptionally low pressure drop.
  • High dirt holding capacity.
  • Excellent chemical contaminant reduction.
  • High Adsorptive Capacity and Efficiency.
  • NSF and WQA certification for Material Safety.
  • 100% Coconut Shell Activated Carbon
  • Performance validated by independent laboratories
  • Manufactured in an ISO 9001 & 14001 certified facility
  • Certified for Sustainability by WQA - S-803
  • California Prop. 65 Compliant.
  • Industry-Standard Size for Universal Replacement.   Fits #20 Big Blue (20"BB) Open Sump Filter Housings (Approximate Outer Dimensions of Housing: 7½" x 23½")

Specifications for 20" BB Matrikx CTO

KX Part #: 32-425-20-MATRIKX
Replaces Part #:

KX 32-425-125-20
Filtrex GreenBlock FXB20VOC
Filter Size:
20" Big Blue  (4½" x 20")
Filter Dimensions: 4.25" OD x 20"L
For Contaminants:

Chlorine, Chloramine
Taste and Odor
Sediment, Dirt, Rust
Nominal Filtration: 5 Micron
Chlorine Taste & Odor
>51,000 gallons @ 7 gpm
Chloramine Reduction: >6,000 gallons @ 3 gpm
Pressure Drop: 7 psid @ 7 gpm
Manufacturer: KX Technologies
20" Big Blue Housings:
AMI Filter Housings
Ametek/Pentek Housings
Country of Manufacture: India

KX Filters are NSF WQA California 65 Compliant

Product Specifications KX MATRIKX Carbon Filters


KX MATRIKX Carbon Filters Certified for Sustainability

KX Filters with GreenBlock SustainableMade from 100% coconut shell activated carbon, a renewable and eco-friendly material, the standard MATRIKX® line has been Certified for Sustainability by WQA. MATRIKX products are manufactured using sustainable materials and a process
that is kind to the environment.