Hydro Life utilises the patented KDF media in conjunction with granular activated carbon (GAC) to provide superior filtering and protection from many contaminants.Fine mesh activated carbon provides safer, cleaner, better tasting water by filtering our contaminants including those that cause bad odour and taste.The EPA approved filter media, KDF, controls bacteria growth that may occur in standard carbon filters.The Hydro Life filter easily instals to your inline water supply hose on your boat or RV.Replacement cartridge 5 Series will fit most 25cm filter housings.Working pressure range: 20-100 PSI.Maximum flow rate: 2.5 GPM