This replacement filter cartridge has technical specifications as Unicel # 7656, Pleatco # PA50, Filbur # FC1240 and OEM # CX500RE. With its 3 inch holes both at top as well as bottom it handles the top load of 50 sq ft. It is 15 5/8 inch long and 7 inch wide and best fit for Hayward StarClear C500, Cal Spas, Hollibaugh Spas, PDC Spas, etc. Provides you clear water for your swimming pools and spas.
Use With Any Spa
By Nancy Leo
This filter work with every spa without any problem. It gives the best filter for your spa so that you can enjoy it. I love this product. Highly recommended.