1. Compatible with Hayward Star Clear Plus C900/C9002 pool filter, Hayward CX900RE, Pleatco PA90/PA90-4, FILBUR FC-1292, Unicel C-8409, and other equivalent models. Manufacturer part numbers are used for reference only to ensure proper fitment. 2. NSF/ANSI 50 Certified: Tested and certified by NSF International to meet NSF/ANSI 50 standards for material safety and performance. Features a triple-pleated design that provides three times more filtration surface area than standard cartridges, effectively trapping dirt, hair, sand, and oils to maintain clean, clear water. Dimensions: 8-15/16 inches in diameter with a 17-3/8 inch height. Designed to fit seamlessly into compatible filter housings for reliable performance. Durable Construction: Built with high-quality spunbond polyester media and a reinforced inner core to withstand high water pressure, ensuring long-lasting durability and optimal filtration efficiency. Note: Due to variations in lighting and screen settings, the actual product color may vary slightly from images. Minor dimensional differences may occur due to manual measurement.