Lead Removal: The FC15B-PB filter's media can effectively remove up to 99% of lead from your water, ensuring safer drinking water for your household. Comprehensive Heavy Metal Filtration: Featuring advanced MetSorb media, our FC15B-PB water filter efficiently removes heavy metals like arsenic (III & V), lead, mercury, cadmium, and more. This superior filtration extends the filter's lifespan, reducing replacement frequency. (Note: This product is independently manufactured by iSpring and is not affiliated with MetSorb.) Standard Size: Our filter fits standard 10” x 4.5” housings, including brand-name models. Built to Last: Your filter changing schedule will depend on the contamination level of your source water. We recommend changing your filters every 12 months or after filtering up to 50,000 gallons of water. Guaranteed Freshness: Each cartridge is individually wrapped to maintain optimal freshness. Please unwrap before use. Peace of Mind Support: Register online to activate your warranty and enjoy lifetime free tech support from our U.S.-based team. We stand by our products—if you encounter any issues, contact us immediately, and we’ll gladly assist! Important Note: This filter does not reduce Total Dissolved Solids (TDS) like an RO membrane. If TDS removal is your goal, we recommend exploring our iSpring Reverse Osmosis (RO) systems.