Berkey Imperial Water Filter System with 2 Black Berkey Filters, Made From High Quality Stainless Steel INCLUDES: Imperial Stainless Steel Containers (Upper, Lower & Lid), Easy Flow Spigot, 2 Berkey Black Filter Elements, 4 Hole Plugs, 1 knob, and 1 set of easy to follow assembly instructions The Imperial is designed for larger groups of 25-75 people. Holding Capacity of 4.5 Gallons of Purified Water & Filtration Rate of 5.5 Gallons per hour. 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. This is possible because of the Black Berkey filter elements unique ability to be cleaned up to 100 times using a 3M Scotch-Brite pad. Each (1) Black Berkey Filter Element has a lifespan of 3,000 gallons. Thats an incredible 6,000 gallons for a two-filter system. This is possible because of the Black Berkey filter elements unique ability to be cleaned up to 100 times using a 3M Scotch-Brite pad. Each (1) Black Berkey Filter Element has a lifespan of 3,000 gallons. Thats an incredible 6,000 gallons for a two-filter system. This is possible because of the Black Berkey filter elements unique ability to be cleaned up to 100 times using a 3M Scotch-Brite pad. Each (1) Black Berkey Filter Element has a lifespan of 3,000 gallons. Thats an incredible 6,000 gallons for a two-filter system. This is possible because of the Black Berkey filter elements unique ability to be cleaned up to 100 times using a 3M Scotch-Brite pad. Each (1) Black Berkey Filter Element has a lifespan of 3,000 gallons. Thats an incredible 6,000 gallons for a two-filter system. This is possible because of the Black Berkey filter elements unique ability to be cleaned up to 100 times using a 3M Scotch-Brite pad. Each (1) Black Berkey Filter Element has a lifespan of 3,000 gallons. Thats an incredible 6,000 gallons for a two-filter system. This is possible because of the Black Berkey filter elements unique ability to be cleaned up to 100 times using a 3M Scotch-Brite pad. Each (1) Black Berkey Filter Element has a lifespan of 3,000 gallons. Thats an incredible 6,000 gallons for a two-filter system. This is possible because of the Black Berkey filter elements unique ability to be cleaned up to 100 times using a 3M Scotch-Brite pad.