ISpring FCRC25B High Capacity 20″ x 4.5″ Water Filter Replacement Cartridge Lead Reducing,, White, 1 Count (Pack of 1). 4.5″D x 4.5″W x 20H. Protect Your Family and Household Appliance from Lead: Our whole house water filter (FCRC25B) is specially designed for reducing lead. This filter features a high capacity of 150,000 gallons at 100ppb for lead. Standard Size: Our whole house filter fits standard housings that require 20 x 4. 5 water filters, including brand name models. Easy to Maintain: FCRC25B whole house water filter replacement cartridge lasts up to 3 times longer than conventional media. It also has a minimum impact on water flow (up to 15 GPM) and requires minimum maintenance. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. We are happy to help! Please Note: The water filter is individually wrapped to ensure freshness. Please unwrap the cartridge before use. Unlike an RO membrane, this whole home water filter doesn’t reduce Total Dissolved Solids (TDS), and instead keeps healthy minerals in your water. If you are interested in a filter that removes TDS, consider our iSpring Reverse Osmosis (RO) systems.