The Groen 175996 is a high-quality water filtration system cartridge designed for optimal performance. This CTOS-QCR replacement cartridge ensures clean and safe water by effectively reducing contaminants. Engineered for easy installation, it seamlessly fits into your existing filtration system, providing reliable filtration for various applications. With its durable construction, this cartridge offers long-lasting use, making it an essential component for maintaining water quality. Enjoy peace of mind knowing that your water is filtered to meet high standards of purity.