1. Compatible with Hayward & Pleatco Filters:- The VEVOR GL-50-1 pool filter cartridge replaces Hayward C500, CX500-RE, Pleatco PA50, Unicel C-7656, and Filbur FC-1240. With a length of 20 in and 7 in OD, it fits most 50 sq ft pool filter cartridge systems, delivering easy installation and reliable performance. 2. Certified Filtration with 50 Micron Precision:- EPA certified, this pool and spa filter cartridge is made from safe, durable materials and features 50-micron precision to effectively trap fine particles like hair, leaves, dust, and sediment—ensuring clean water for spas, hot tubs, and pools. 3. High-Efficiency Trilobal Pleated Fiber:- Built from trilobal high-efficiency filtration fiber, this 50 sq ft pool filter increases surface area and dirt-holding capacity. It helps maintain optimal water clarity and improves system backpressure stability for longer performance. 4. Durable Core & End Cap Construction:- Engineered with a reinforced inner core and molded end caps, this CX500-RE compatible filter withstands high water pressure. It ensures smooth operation and minimizes the risk of filter collapse, making it ideal for long-term use. 5. Easy Maintenance & Reusable Design:- This easy-to-clean pool filter is designed for hassle-free upkeep. A quick rinse restores filtration efficiency, allowing for repeated use and cost-effective maintenance. Monthly cleaning is recommended for best results.