Clatterans CL-1020 foster soundbox of water system drool for BB9-2 black Berkey System, 2-Pack

Uses state-of-the-art technology to help remove harmful substances, such as Bacteria, Chlorine, Chloramines, Heavy Metals, Pharmaceuticals and more.; The real filter lifespan depends on water quality and level of contaminants, but for best filtration results, please replace the filter every 8,000 gallons for pair to maximize contaminant reduction.; Replacement for BB9-2 Fluoride/Arsenic Replacement Filter and fit the water filter system working in pair with PF-2 filter. Includes 2 priming buttons.; Easy to install and no tools required.; Interchangeable with Travel, Big, Royal, Imperial and Crown Series.