Premium Catalytic Carbon + KDF-85 (3/4 lb) GAC-Style Water Filter Cartridge 10″ × 2.5″ ( 9 7/8″ x 2.5″), SKU: CATKDF85-10

$39.00

Description

Premium catalytic carbon + KDF-85 filtration

Specialty 10″ × 2.5″ cartridge for chlorine, chloramine, odor, light iron and selected heavy-metal treatment

This premium specialty cartridge combines Centaur® catalytic carbon with high-purity KDF-85 media. It is designed as an upgrade over standard GAC and catalytic-carbon-only cartridges when broader treatment is needed for chlorine, chloramine, rotten-egg odor, light-to-moderate iron concerns and selected heavy metals.

2 media typesCentaur® carbon + KDF-85
10″ × 2.5″Standard slim cartridge
Specialty treatmentMunicipal or selected well-water use
Premium upgradeAbove standard GAC and CAT-10

How it works

Dual-media treatment for broader water-quality concerns

The catalytic carbon stage helps address chlorine, chloramine, organic compounds and odor, while KDF-85 supports redox treatment of selected dissolved metals and helps inhibit bacterial growth within the filter media.

Media 01

Centaur® Catalytic Carbon

Helps reduce chlorine, chloramine, unpleasant taste, unpleasant odor, hydrogen-sulfide odor and many common VOCs more effectively than standard activated carbon alone.

Media 02

High-Purity KDF-85

Uses an oxidation-reduction process to help reduce selected heavy metals, support treatment of light iron concerns and inhibit bacterial growth within the filter media.

Key benefits

Broader treatment than standard carbon cartridges

CL

Helps Reduce Chlorine and Chloramine
Premium catalytic carbon provides broader chlorine and chloramine treatment than standard GAC media.

H₂S

Enhanced Rotten-Egg Odor Reduction
Helps provide stronger and more consistent reduction of light hydrogen-sulfide odor than standard activated carbon.

FE

Helps Address Light-to-Moderate Iron
Helps reduce iron-related metallic taste, unpleasant odor and discoloration under suitable water conditions.

HM

KDF-85 Redox Treatment
High-purity KDF-85 helps reduce selected heavy metals through an oxidation-reduction process.

VOC

Organic Chemical Adsorption
Helps reduce many common VOCs, solvents and trace organic compounds that may affect water quality.

BG

Helps Control Media Fouling
KDF-85 helps inhibit bacterial growth within the filter media, supporting cleaner and more consistent cartridge performance.

CK

Premium Dual-Media Blend
Combines Centaur® catalytic carbon with high-purity KDF-85 for broader treatment than a standard carbon cartridge.

UP

Top Upgrade Over Standard Carbon
A premium upgrade over standard GAC and CAT-10 cartridges when chloramine, odor, light iron or selected heavy metals are concerns.

Reduction guide

What this cartridge helps reduce

Actual reduction depends on source-water chemistry, pH, contaminant concentration, pressure, flow rate, contact time and remaining media capacity.

Helps reduce

Chlorine
Chloramine
Rotten-egg odor
Light hydrogen sulfide
Iron-related taste
Iron-related odor
Light discoloration
Selected heavy metals
Many common VOCs
Selected solvents
Trace organic compounds

Performance is strongest when the cartridge is correctly sized for the flow rate and the source water falls within the treatment range of the media.

Not a substitute for full-scale treatment

Heavy iron contamination
High hydrogen sulfide
Hardness minerals
Fluoride
Bacteria in source water
Dissolved salts / TDS

High iron, strong sulfur odor, microbiological contamination or high hardness may require dedicated treatment equipment rather than a single cartridge.

Compatibility and placement

Designed for compatible standard slim housings

Product type Specialty catalytic carbon and KDF-85 filter cartridge
Filter media Centaur® catalytic carbon and high-purity KDF-85
Nominal cartridge format 10″ × 2.5″ standard slim
Housing compatibility Compatible standard 10″ × 2.5″ slim housings
Typical applications Whole-house, under-sink or point-of-use systems with compatible flow and housing size
Recommended position After sediment prefiltration
SKU CATKDF85-10

Installation guidance

  • Install a sediment filter upstream whenever suspended particles are present
  • Confirm the housing is designed for a standard 10″ × 2.5″ cartridge
  • Operate only within the pressure, temperature and flow limits of the complete system
  • Pressurize slowly and inspect the housing for leaks after replacement
  • Flush the cartridge before normal use
  • Replace when treatment performance declines or the recommended service interval is reached

Upgrade comparison

When to choose this cartridge

GAC

Standard GAC

Best for basic chlorine, taste and odor reduction when chloramine, sulfur odor, iron and heavy metals are not primary concerns.

CAT

CAT-10 Catalytic Carbon

A stronger option for chloramine and odor treatment when KDF-85 metal treatment is not required.

KDF

CATKDF85-10—This Product

The broadest upgrade in this group, combining catalytic carbon with KDF-85 for chloramine, odor, light iron and selected heavy metals.

TEST

Water Testing Recommended

Testing is especially important when iron, sulfur odor, heavy metals or well-water contamination are suspected.

Before purchase

Good to know

!
Confirm cartridge size
This cartridge fits standard 10″ × 2.5″ slim housings and does not fit 10″ × 4.5″ Big Blue housings.

!
Iron performance depends on water chemistry
Iron type, concentration, pH, dissolved oxygen and flow rate can significantly affect results.

!
Hydrogen-sulfide treatment is limited
Strong or persistent rotten-egg odor may require a larger dedicated oxidation and filtration system.

!
Not a disinfectant
KDF-85 may inhibit bacterial growth within the media but does not make microbiologically unsafe water safe to drink.

!
Flow rate matters
Excessive flow can reduce contact time and treatment effectiveness.

!
Use sediment prefiltration
Suspended debris can shorten media life and reduce cartridge performance.

This product includes one replacement cartridge only. Filter housing, wrench, mounting hardware and plumbing fittings are not included. Results vary by water quality and operating conditions. This cartridge does not significantly reduce hardness or TDS and is not intended to make microbiologically unsafe water safe to drink.
Not sure whether CATKDF85-10 is the right cartridge?
Send your water source, ZIP code, recent water report and filtration-system details.

Ask a Water Filter Specialist

Additional information

Weight 32 oz
Dimensions 10 × 3 × 3 in

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