The Antunes 7000411 L-420 Ultrafilter Cartridge Kit is a comprehensive solution for maintaining the efficiency and longevity of your ultrafiltration systems. This kit includes essential parts, detailed instructions, and a vital component – the (1) O-ring kit (7000413), making it a complete package for ease of installation and maintenance. Designed to fit models UFL-420, VZN-420H, VZN-421H, and VZN-421H-T5, this kit is versatile and compatible with a range of systems. The inclusion of an O-ring kit ensures a tight seal, preventing leaks and maintaining optimal system performance. This product is highly valued in various segments of the industry, particularly in commercial and industrial water filtration applications, where reliable filtration is critical. The Antunes L-420 Ultrafilter Cartridge Kit stands out for its precision engineering and robust components, addressing the needs of businesses that require consistent, high-quality filtration. With its straightforward assembly process guided by clear instructions, it offers a user-friendly experience, minimizing downtime and maximizing operational efficiency. Its compatibility with multiple models adds to its versatility, making it a practical choice for businesses looking to streamline their filtration maintenance procedures with a single, reliable kit.