2 X Berkey BB9-2 Replacement Black Purification Elements， Set of 2<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Includes: Four Replacement Filters</li><li>Capacity: 12，000 Gallons</li><li>Each black element has a life of 3，000 gallons， or less than 2 cents per gallon of water</li><li>Original factory replacement element for all Berkey water filter systems</li><li>Will fit the following Berkey systems: Travel Berkey， Big Berkey， Royal Berkey， Imperial Berkey， Crown Berkey， Berkey Light</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31-JMimagxL.jpg" noproxy>