Watts C-MAX Carbon Block 20" Large Filter
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Watts C-MAX Carbon Block 20" Large Filter


Retail: $149.99 /ea
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The Watts C-MAX Carbon Block 20" Cartridge (Watts MAXETW-FF20) is a 20" x 4 1/2" carbon block water filter replacement cartridge used in various water filter systems to reduce the bad taste and odor of chlorine as well as many common particulates such as sediment, dirt, turbidity, limescale, rust, sand, silt, and other impurities down the 5 micron level.

The Watts MAXETW-FF20 water filter uses thick wall solid carbon block filtration technology to maximize carbon capacity and maintain a low pressure drop for more efficient and thorough water filtration.

This Watts C-Max Series 20" carbon block filter is a compatible replacement water filter cartridge for similar filter brands including Pentek filters, Ametek filters, Culligan filters, US Filter filters, Ace filters, American Plumber filters, Bruner filters, Plymouth filters, Pentair filters, and other name brands. It will fit all water filter housings which use a 20" x 4.5" Large /Full Flow carbon filter replacement cartridge.

Watts 20" Thick Wall Carbon Block Full Flow Filter Specifications (Watts MAXETWFF20):

  • Micron Rating: 5 micron
  • Dimensions: 20" x 4 5/8"
  • Temperature Range: 40 - 165 F
  • Filter Life: About 20,000 gallons or 6 months
  • Max. Flow Rate: Approx. 4 gallons per minute (4 GPM)
  • Filter Media: Economical thick wall (ETW) solid carbon block

More technical information about Watts C-Max Series water filters can be found here.

The Watts MAXETW-FF20 is also known by part number US70793.

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