*The Berkey® stainless steel chambers are assembled in the USA from US and imported parts. The Black Berkey® Elements are made and assembled in the USA. The Crown Berkey™ System comes standard with two Black Berkey® Elements but can be expanded up to 4, 6, or 8 elements The Crown Berkey™ System is our largest system and is ideal for large groups at home, churches, hospitals, etc, Constructed of highly polished AISI 304 stainless steel Storage capacity of about 6 gallons (22.7 liters) Upper chamber nests within lower chamber for transport and stands only 20" in height Maximum Filters: 8 Black Berkey® Elements (in upper chamber) System includes upper and lower stainless steel chamber, 2 Black Berkey® Elements (expandable to 4, 6, or 8), 1 stainless steel lid, 1 spigot, 2 wingnuts, 2 washers, 1 priming button, 6 blocking plugs, 1 rubber gasket to protect the base Height when in use: 30" Diameter: 11" Weight: 12 lbs empty For normal everyday use, this system easily serves: 6-12 people Fully configured, this system can serve up to 300-625 people a day, during an emergency Maximum Filtration Flow Rate: Configured with 2 Black Berkey® Elements, the Crown Berkey® System can filter up to 6.5 gallons (24.6 liters) of water per hour Configured with 8 Black Berkey® Elements, the Crown Berkey® System can filter up to 26 gallons (98.4 liters) of water per hour Up to 8 PF-2™ Fluoride and Arsenic Reduction Elements can be installed in the lower chamber if desired Flow rate calculated with upper chamber full to top. Flow rate decreases as water level declines.