This Replacement filter cartridge has the technical specifications as Unicel # C-4995, Pleatco # PCAL100 and Filbur # FC-2940. This 23 5/8 inch long and 4 15/16 inch wide filter cartridge is capable of handling the top load of 95 square feet and is best fit for Waterway Plastics, Cal Spas, Infinity Spas by Maax, Lifestyle Spas, Statewood spas, Savannah spas, Acryx-Maax Spas (Canada), Coast Spas (Canada), QCA, J.E.M. Spas. It is very easy to install and made of high grade of materials. By installing it you can get clean and clear water for your pools and spas and retain them free from germs and sand.