The W9120133 British Berkefeld 7 Inch Ultra Fluoride Imperial Gravity Filter is an all in one ceramic water filter. the W9120133 is capable of the same high performance as the ATC Super Sterasyl candles while also showcasing the ability to reduce fluoride. Comparable alternatives like the Berkey PF-2 can be prone to leach fluoride treatment media into the lower chamber, with the W9120133 Ultra fluoride Imperial Filter your water is treated for Fluoride before it reaches the fast flow solid carbon, preventing any leaching effects. Reduce contaminants such as sediment, cysts, bacteria, heavy metals, lead, and fluoride from your drinking water with this amazing ceramic water filter.