Berkey SSCF-9 British Berkefeld 9-Inch Replacement Ceramic Water Filters for Big Berkey Will fit the following Berkey systems: Travel Berkey, Big Berkey, Royal Berkey, Imperial Berkey, Crown Berkey, Berkey Light Fits the Big Berkey and British Berkefeld Cleanable, Self-Sterilizing Filters Will fit most other gravity filter systems