The PF-4 is for use with Berkey Ceramic Filters - If you use Black Berkey Purifiers, you will need the PF-2
Primarily Filters Fluoride and Arsenic
Attaches to the bottom of a Berkey Ceramic Filter - Used as a Post-Filter
For use with Big Berkey, Travel Berkey, Berkey Light, Royal Berkey, Imperial Berkey, Crown Berkey

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 6.5 inch
Height : 6.4 inch
Length : 6.7 inch

Item Weight: 0 ounce (View shipping rates and policies)
Shipping Weight: 1.7 pounds (View shipping rates and policies)

ASIN : B00BWIWYC6