Eden Valley Farms sells authentic Berkey water purifacation systems. Don't be fooled by fake knockoff units online that don't work. Call us 801-668-7272 *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. This Royal Berkey® System comes standard with 2 Black Berkey® Elements but can be expanded up to 4 elements The versatile Royal Berkey® System is ideal for use at home with medium-sized families for everyday use at home. Constructed of highly polished AISI 304 stainless steel Storage capacity of about 3.25 gallons (12.3 liters) Upper chamber nests within lower chamber for transport and stands only 15.25 in height Maximum Filters: 4 Black Berkey® Elements (in upper chamber) System includes upper and lower stainless steel chamber, 2 Black Berkey® Elements (expandable up to 4), 1 stainless steel lid, 1 spigot, 2 wingnuts, 2 washers, 1 priming button, 2 blocking plugs, 1 rubber gasket to protect the base Height when in use: 23 Diameter: 9.5 Weight: 8 lbs empty For normal everyday use, this system easily serves: 2-4 people