IMP6X2-BB Imperial Berkey with 2 Black Filters and 2 Flouride Filters INCLUDES: Imperial Stainless Steel Containers (Upper, Lower & Lid), 2 Black Berkey Filters, 2 Fluoride Filters, 4 Hole Plugs, 1 spigot, and one set of easy to follow assembly instructions Holds 4.5 gallons of purified water and filters up to 5.5 gallons per hour (running with the 2 included filters) The Imperial is made with High Grade 304 Stainless Steel and measures 10"D x 27"H Each (1) Black Berkey Filter Element has a lifespan of 3,000 gallons. Thats an incredible 6,000 gallons for a two-filter system. Each (1) Fluoride Filter attaches onto the stem of the Black Element, as a post filters, and can filter up to 1,000 gallons (3,785 liters)