The 3M CFS11S (5558803) Water Filter Single Opaque Housing is a specialized filtration solution designed to meet the specific needs of various segments within the water purification industry. This product features a single opaque housing unit which securely fits a 9-3/4" cartridge, providing a versatile option for different filtration requirements. A key technical specification of this water filter housing is the necessity for an external shut-off valve, ensuring ease of maintenance and enhanced control during operation. Another significant feature is the inclusion of a pressure relief button, which facilitates safe and efficient cartridge changes, enhancing the operational safety of the filtration system. The design focuses on reliability and effectiveness, making it suitable for commercial and industrial applications where dependable water filtration is critical. By integrating these features, the 3M CFS11S caters to businesses that prioritize robust performance and user-friendly maintenance in their water filtration systems. Whether utilized in restaurants, healthcare facilities, or industrial settings, this water filter housing exemplifies 3M's commitment to quality and innovative design, ensuring consistent delivery of purified water in demanding environments.