The 3M™ CUNO® legacy drop-in style replacement Cartridge, model CFS217, which is used in model CFS200, provides consistent quality water by reducing chlorine taste and odor and particulate from incoming water. 3M™ CUNO® legacy drop-in style replacement Cartridge, model CFS217, which is used in model CFS200, provides consistent quality water by reducing chlorine taste and odor and particulate from incoming water. This space saving, compact design contains a high adsorption granular activated carbon. 3M™ water filtration products systems and cartridges offer a wide range of solutions designed to address many types of water quality concerns. Third party certifications, such as NSF and WQA, are an advantage provided on many 3M™ water filtration Products. 3M™ purification is a known leader in filtration technology recognized for innovation, trust, and quality around the world.