PF-2 fluoride and arsenic reduction set of 2 for gravity ✔️ Set of 2 genuine PF-2 fluoride and arsenic reduction filters. These authentic PF-2 replacement elements are designed for Berkey gravity-fed water filter systems. They attach to the bottom of Black Berkey Elements to adsorb fluoride, arsenic(V), pre-oxidized arsenic(III), and other residual heavy metals in home filtration setups. Compatible models include Big Berkey, Berkey Light, Crown Berkey, Imperial Berkey, Royal Berkey, and Travel Berkey. ✅ Authentic PF-2 fluoride and arsenic reduction elements (set of 2) for Berkey gravity-fed systems ✅ Removes fluoride, arsenic(V) and pre-oxidized arsenic(III) and other residual metals with Black Berkey Elements ✅ The original PF-2 filters by Berkey, authentic components only ✅ Replace after about 1,000 gallons of use under normal conditions ✅ Attaches to bottom of Black Berkey Elements and sits in the lower chamber ✅ Fits Big Berkey, Berkey Light, Crown Berkey, Imperial Berkey, Royal Berkey and Travel Berkey 💡 What is a fluoride and arsenic reduction element used for in gravity-fed water systems? It's a handy replacement part that improves contaminant removal in home water filters. - Handy for reducing fluoride and arsenic levels when paired with authentic Berkey elements - Useful for Crown Berkey, Imperial Berkey, Royal Berkey and Travel Berkey setups - Designed for long service life with replacement guidance around 1,000 gallons ✝️