This Replacement filter cartridge replaces Unicel # C-4607, Pleatco # PC7-120 and Filbur # FC-3710 and complies with OEM # PC7-120. This 8 inch long and 4 ¼ inch wide replacement filter is capable of handling the top load of 5 square foot. With its 1 15/16 inch holes both at its top as well as bottom this filter cartridge is best fit for Aqua Leisure, Coleco F-120/DR-7, Krystal Klear Models, Pleatco, Porta Spas, Simple Set, Intex Recreation- Krystal Klear Model 108R, Nidek 12, Intex 58631, 58623, The Wet Set Model 02/03R,12R/22R Intex Type C. By installing this filter you get complete security from germs and sand.