This auction is for (1) Pollenex Water Filter Cartridge Model FWP300. It is brand new in the box. Comes from a non-smoking & pet-free home. It's purpose is to "get the lead out" literally along with chlorine and other things you don't want in your water. It's made of plastic and uses a carbon block filter to get the impurities out. This is New Old Stock (NOS). I bought it a long time ago for an apartment, but moved before I could use it! My loss is your gain! 

Send me a message through Ebay if you have any questions and please contact me first if there are any issues with your purchase.