Optimal Compatibility: Designed to fit perfectly with for PWW50L, for 4CH-949, for FC-0172, ensuring a snug fit and easy installation for your . Advanced Filtration Technology: Utilizes superior filtration materials to capture more contaminants and improve water clarity, ideal for maintaining a clean and healthy spa environment. Construction: Built to last with high-quality materials that withstand frequent use and resist wear and tear, ensuring long-lasting performance and reliability. Replacement Models: Also replaces for SD-01143, for 817-4050 filters. Check your current filter model for seamless replacement. Efficient Water : Engineered to not restrict water while providing thorough filtration, enhancing your 's efficiency and water circulation. This filter is designed to enhance your experience by ensuring optimal water quality and clarity. Its advanced filtration technology effectively captures contaminants, while its construction guarantees long-lasting use. With easy compatibility and efficient water , this filter is an essential component for maintaining a clean and enjoyable spa environment. Color: Blue Material: plastic Package Contents: 1*Spa Pool Filter Cartridges Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.