Easy to install replacement for the RapidPure 9L Gravity System Virus protection: Treats water for viruses, parasites and more with UltraCeram technology Use Anywhere: Convenient for freezing temperatures. The updated design extends cartridge lifespan to 200 gallons so you’re always prepared Faster flow rates: OpenPore Technology uses adsorption (natural magnetic attraction) combined with larger pore sizes for easy drinking The RapidPure Replacement Gravity Purifier is easy to install and allows you to keep using your RapidPure Gravity System for years to come.