Crown Berkey Water Filter With 2 Black and 2 PF2 Fluoride Filters INCLUDES: Crown Stainless Steel Containers (Upper, Lower & Lid), 2 Black Berkey Filters, 2 PF-2 Fluoride Filters, 6 Hole Plugs, 1 Knob and 1set of easy to follow assembly instructions 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 Pair of (2) PF2 Fluoride Filter has a life span of 1,000 gallons, and should be replaced after for best results. The Fluoride Filters are called The Crown is made with High Grade 304 Stainless Steel and measures 11"D x 31"H Holds 6 gallons of purified water & Filters up to 6.5 gallons per hour. Designed for large goups of 35+ People