About this item Premium aftermarket water filter element compatible with all Berkey water purification systems Compared to the original part BB9. The element is made with premium natural coconut activated carbon which can significantly filter out chemical, heavy metal etc from the freshwater sources A pair of black elements lasts for up to 6,000 gallons of water. Do not not for use with saltwater sources or softened water. Dimension: 9.5" x 2.5". A set of 8 element included. You can also find our premium Fluoride & Arsenic filters for pairing by typing any of the following ASINs in search bar: B09YQM3KLV, B09YQNLHL1, B09YQPMD1T, B09YQN4G7X › See more product details