Watts (MAXETW-FF975) C-MAX 10" x 4.5" Full Flow Coconut Carbon Block 5 Micron Filter
C-MAX MAXETW-FF975 10" x 4.5" Full Flow Coconut Carbon Block Filter
Thick-wall coconut shell carbon block engineered for superior VOC and chlorine reduction in whole house and well water applications. 5 micron filtration in a full flow design.
Thick-wall carbon block outperforms standard GAC
100% Coconut Shell Carbon
Water-washed coconut shell carbon provides superior adsorption capacity compared to bituminous or lignite carbon. Reduces up to 99% of chlorine taste and odor.
Thick Wall Construction
Dense carbon block prevents channeling and maintains consistent contact time. Outperforms loose granular activated carbon in chlorine reduction and pressure stability.
VOC & Cyst Reduction
0.5 micron rated carbon block reduces volatile organic compounds and cysts while providing extended service life. NSF Standard 42 certified for performance.
Media Wrap Design
Protective wrap between center tube and carbon block minimizes carbon fines in filtered water. FDA-grade components throughout for safety and reliability.
Watts MAXETW-FF975 Technical Details
| Dimensions | 10" x 4.5" (Big Blue) |
| Micron Rating | 5 micron nominal, 0.5 micron rated |
| Media Type | Coconut shell carbon block |
| Chlorine Reduction | Up to 99% |
| Certification | NSF Standard 42 |
| Flow Design | Full flow with low pressure drop |
| Housing Compatibility | Slimline and standard Big Blue |
Fits Standard 10" x 4.5" Big Blue Housings
The Watts MAXETW-FF975 fits all standard 10 inch x 4.5 inch Big Blue filter housings, including slimline and full-size configurations. Compatible with Watts, Pentek, Hydronix, and other manufacturers using the industry-standard 10" x 4.5" cartridge size. Ideal for whole house filtration systems and well water applications requiring VOC and chlorine reduction.
Replacement Schedule
Whole House City Water
Replace every 6-12 months depending on water quality and household usage. Monitor pressure drop and chlorine taste as indicators.
Well Water Applications
Replace every 3-6 months in well water systems due to higher sediment and organic load. Test water regularly for VOC breakthrough.
High Usage or Contamination
Replace sooner if you notice chlorine taste return, pressure drop, or visible sediment in filtered water. Carbon capacity varies with contaminant levels.
NSF Certified Performance
Independently tested to NSF Standard 42 for chlorine reduction and material safety
Superior to GAC
Thick-wall carbon block prevents channeling and delivers consistent filtration throughout service life
Universal Fit
Fits all standard 10" x 4.5" Big Blue housings from any manufacturer
FDA Grade Materials
All components meet FDA standards for drinking water contact
C-MAX MAXETW-FF975 10" x 4.5" Full Flow Coconut Carbon Block Filter
Thick-wall coconut shell carbon block engineered for superior VOC and chlorine reduction in whole house and well water applications. 5 micron filtration in a full flow design.
Thick-wall carbon block outperforms standard GAC
100% Coconut Shell Carbon
Water-washed coconut shell carbon provides superior adsorption capacity compared to bituminous or lignite carbon. Reduces up to 99% of chlorine taste and odor.
Thick Wall Construction
Dense carbon block prevents channeling and maintains consistent contact time. Outperforms loose granular activated carbon in chlorine reduction and pressure stability.
VOC & Cyst Reduction
0.5 micron rated carbon block reduces volatile organic compounds and cysts while providing extended service life. NSF Standard 42 certified for performance.
Media Wrap Design
Protective wrap between center tube and carbon block minimizes carbon fines in filtered water. FDA-grade components throughout for safety and reliability.
Watts MAXETW-FF975 Technical Details
| Dimensions | 10" x 4.5" (Big Blue) |
| Micron Rating | 5 micron nominal, 0.5 micron rated |
| Media Type | Coconut shell carbon block |
| Chlorine Reduction | Up to 99% |
| Certification | NSF Standard 42 |
| Flow Design | Full flow with low pressure drop |
| Housing Compatibility | Slimline and standard Big Blue |
Fits Standard 10" x 4.5" Big Blue Housings
The Watts MAXETW-FF975 fits all standard 10 inch x 4.5 inch Big Blue filter housings, including slimline and full-size configurations. Compatible with Watts, Pentek, Hydronix, and other manufacturers using the industry-standard 10" x 4.5" cartridge size. Ideal for whole house filtration systems and well water applications requiring VOC and chlorine reduction.
Replacement Schedule
Whole House City Water
Replace every 6-12 months depending on water quality and household usage. Monitor pressure drop and chlorine taste as indicators.
Well Water Applications
Replace every 3-6 months in well water systems due to higher sediment and organic load. Test water regularly for VOC breakthrough.
High Usage or Contamination
Replace sooner if you notice chlorine taste return, pressure drop, or visible sediment in filtered water. Carbon capacity varies with contaminant levels.
NSF Certified Performance
Independently tested to NSF Standard 42 for chlorine reduction and material safety
Superior to GAC
Thick-wall carbon block prevents channeling and delivers consistent filtration throughout service life
Universal Fit
Fits all standard 10" x 4.5" Big Blue housings from any manufacturer
FDA Grade Materials
All components meet FDA standards for drinking water contact
Original: $93.26
-65%$93.26
$32.64Description
C-MAX MAXETW-FF975 10" x 4.5" Full Flow Coconut Carbon Block Filter
Thick-wall coconut shell carbon block engineered for superior VOC and chlorine reduction in whole house and well water applications. 5 micron filtration in a full flow design.
Thick-wall carbon block outperforms standard GAC
100% Coconut Shell Carbon
Water-washed coconut shell carbon provides superior adsorption capacity compared to bituminous or lignite carbon. Reduces up to 99% of chlorine taste and odor.
Thick Wall Construction
Dense carbon block prevents channeling and maintains consistent contact time. Outperforms loose granular activated carbon in chlorine reduction and pressure stability.
VOC & Cyst Reduction
0.5 micron rated carbon block reduces volatile organic compounds and cysts while providing extended service life. NSF Standard 42 certified for performance.
Media Wrap Design
Protective wrap between center tube and carbon block minimizes carbon fines in filtered water. FDA-grade components throughout for safety and reliability.
Watts MAXETW-FF975 Technical Details
| Dimensions | 10" x 4.5" (Big Blue) |
| Micron Rating | 5 micron nominal, 0.5 micron rated |
| Media Type | Coconut shell carbon block |
| Chlorine Reduction | Up to 99% |
| Certification | NSF Standard 42 |
| Flow Design | Full flow with low pressure drop |
| Housing Compatibility | Slimline and standard Big Blue |
Fits Standard 10" x 4.5" Big Blue Housings
The Watts MAXETW-FF975 fits all standard 10 inch x 4.5 inch Big Blue filter housings, including slimline and full-size configurations. Compatible with Watts, Pentek, Hydronix, and other manufacturers using the industry-standard 10" x 4.5" cartridge size. Ideal for whole house filtration systems and well water applications requiring VOC and chlorine reduction.
Replacement Schedule
Whole House City Water
Replace every 6-12 months depending on water quality and household usage. Monitor pressure drop and chlorine taste as indicators.
Well Water Applications
Replace every 3-6 months in well water systems due to higher sediment and organic load. Test water regularly for VOC breakthrough.
High Usage or Contamination
Replace sooner if you notice chlorine taste return, pressure drop, or visible sediment in filtered water. Carbon capacity varies with contaminant levels.
NSF Certified Performance
Independently tested to NSF Standard 42 for chlorine reduction and material safety
Superior to GAC
Thick-wall carbon block prevents channeling and delivers consistent filtration throughout service life
Universal Fit
Fits all standard 10" x 4.5" Big Blue housings from any manufacturer
FDA Grade Materials
All components meet FDA standards for drinking water contact
