Description: Wide Compatibility: This filter cartridge is designed to fit a variety of hot tub filter models, including PWW50, 6CH-940, and Filter FC-0359. Its versatile compatibility makes it suitable for numerous brands and modelsVersatile Application: Perfectly compatible cold, warm, and hot water environments, this filter cartridge is ideal for use in swimming pools, spa pools, and hot tub. It offers flexibility across different settings to meet your filtration needsHigh Efficiency Filtration: Made from premium quality filter , this cartridge effectively captures impurities and contaminants in the water. It ensures clean water quality by maintaining optimal filtration performanceDesign: Built to last through multiple seasons under normal usage conditions, this filter offers great value for money with its strong durability performanceEasy Maintenance & Replacement: Featuring design with simple pleat cleaning options, users can easily perform routine maintenance based on usage frequency and dirt levels, When the filter becomes dirty or clogged, it can be quickly replaced to ensure smooth system Specification: Material: PVC plastic Size Chart: Height 24.3cm/9.57inch, top diameter 15cm/5.91inch, screw mouth diameter 4.65cm/1.83inch Package Includes: 2Spa Filter for Hot Tub Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.