Siemens Water Technologies offers a variety of filter cartridge replacements and housings to meet specific configurations and filtration needs. This Multi-tube housing uses 18 gauge 304 stainless steel construction for maximum corrosion resistance and years of dependable service. The housing is available to accommodate 6, 10, 20, 30 or 40-in, Code F filter cartridges. A swing bolt closure allows quick disassembly for cleaning and service.