The 20″ Full Flow 5 nominal micron carbon block uses top of the line coconut shell housing. It is NSF standard 42 certified. This low cost carbon block filter outperforms granular activated carbon cartridges in chlorine reduction, lower pressure drop, lower cost and offers no water channeling. It offers a long life of up to 40,000 gallons at 4 gallon per minute flow rate.
Watts 7100449 Features:
5 Microns nominal rating
100 Percent coconut shell carbon
Offers a long life of up to 20000 gallons
Fits Full Flow housings
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Specifications
Dimensions and Measurements
| Height | 20 in. |
| Flow Rate (GPM) | 4 |
Warranty and Product Information
| Approved for Commercial Use | Yes |
| Certifications | NSF |
| Lead Leaching Certified NSF/ANSI 61 | N/A (Regulation does not apply) |
Characteristics and Features
| Filter Type | Carbon Filters |


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