The compact Travel Berkey System is the perfect system for traveling (fits comfortably in most carry on or larger suitcases). The 1.5 gallon Travel Berkey System comes standard with 2 Black Berkey Elements, and is ideal for 1-3 people for everyday use. Holds up to 1.5 gallons of filtered water. Produces up to 2.75 gallons per hour (Flow rate is calculated with the upper chamber full to top. Flow rate decreases as water level declines.). System includes upper and lower chambers, 2 Black Berkey Elements, 1 stainless steel lid, knob and screw, 1 spigot, 2 wing nuts, 2 washers, and 1 priming button. AISI 304 stainless steel construction. Includes 2 Black Berkey Elements standard. Dimensions: 7.5"OD x 18"H. Weight: About 7 lb. Berkey stainless steel chambers are assembled in the USA from US and imported parts. Black Berkey Elements are made and assembled in the USA.. Note: Not yet available to residents of Iowa.