This Replacement filter cartridge has the technical specifications as Unicel # 6CH-960, Pleatco # PJW60TL-F2S and Filbur # FC-2800 and complies with OEM # 6540-476 specifications. This 15 ½ inch long and 6 ¾ inch wide filter cartridge has 2 inch open hole at its bottom while semi circular handle at the top. It is capable of handling the top load of 52 square foot and best fit for Jacuzzi Premium. Very easy to install this filter cartridge is made of very good quality of materials. By installing this filter cartridge you get complete clean and clear water free from dust, sand and worms.