This high quality filter cartridge can replace Unicel # C-4975, Pleatco # PRB75 and FC-2395. It meets the OEM # 25390 specifications. This 20 1/8 inch long and 4 15/16 inch wide filter cartridge is capable of handling the top load of 75 square feet and is best fit for Pentair Pool Products-Rainbow Pool, Custom Molded Products, Dakota Spas, Emerald Spas, Serenity spas, Nahani Spas by Maax, Hydro Pool Industries. This high quality filter cartridge provides clean and clear water for your pools and spas. With its 2 1/8 inch open holes both at its top as well as bottom. Very easy to install this filter cartridge is made of superior quality of materials.