Features Uses state-of-the-art technology to help remove harmful substances, such as fluoride, Arsenic and other heavy metal ions. The real filter lifespan depends on water quality and level of contaminants, but for best filtration results, please replace the filter every 1,000 gallons for pair to maximize contaminant reduction Replacement for PF-2 Fluoride/Arsenic Replacement Filter and fit the water filter system working in pair with BB9-2 filter. Includes 2 priming buttons. Easy to install and no tools required. Interchangeable with Travel, Big, Royal, Imperial and Crown Series. Electronics Clatterans 3 years ago 0 0