The Black Berkey® Purification Elements are made and assembled in the USA

• Black Berkey^® Purification Elements are the leader in gravity-fed water purification, backed by independent testing 
• The Black Berkey^® Purification Element formulation has been tested by State and EPA accredited laboratories to exceed NSF/ANSI Standard 53
• Includes: Two 9" Black Berkey^® Purification Elements with 2 washers, 2 wing nuts, and 1 priming button
• Installs in the upper chamber of any Berkey system. Elements can also be used to upgrade most other gravity-fed water filter systems
• Sold as a set of 2 elements
• Durability: Each Black Berkey^® Element is designed to purify approximately 3,000 gallons of water before needing replacement; 2 elements in a Berkey system will purify approximately 6,000 gallons of water before replacement is recommended
• Re-cleanable and self-sterilizing during the life of the element
• Elements come with a 2-year, pro-rated warranty