Berkey PF-4 Fluoride and Arsenic Reduction Elements for the Berkey Earth Filters or Ceramic Filters
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<b>[Product Information]</b><br>
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<li>The PF-4 is for use with Berkey Ceramic Filters - If you use Black Berkey Purifiers, you will need the PF-2</li>
<li>Primarily Filters Fluoride and Arsenic</li>
<li>Attaches to the bottom of a Berkey Ceramic Filter - Used as a Post-Filter</li>
<li>For use with Big Berkey, Travel Berkey, Berkey Light, Royal Berkey, Imperial Berkey, Crown Berkey</li>
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