Berkey Imperial 4 Gallon w/4 Filters

•This system comes standard with 4 Black Berkey® Purification Elements, but can be expanded up to 6 elements.
•The versatile Imperial Berkey® system is the ideal system for use with mid to large-sized families, small groups and during unexpected emergencies
•Constructed with highly polished AISI stainless steel 
•Upper chamber nests within lower chamber for transport and stands only 17" in height
•Storage capacity of about 4.5 gallons (17 liters)
•Maximum Filters: 6 Black Berkey® Purification Elements (in upper chamber)
•System includes upper and lower stainless steel chambers, 4 Black Berkey® Purification Elements (expandable to 4 or 6), 1 stainless steel lid, 2 washers, 2 wingnuts, 2 blocking plugs, 1 priming button,1 spigot, 1 rubber gasket to protect the base
•Height when in use: 26"
•Diameter: 10"
•Weight: 10 lbs empty
•For normal everyday use, this system easily serves: 4-8 people
•Fully configured, this system can serve up to 200-400 people a day, during an emergency
•Maximum Fi