Keep your water clean with little effort, thanks to this pack of 2 complete replacement filter sets. This genuine Unicel Complete Replacement DE Filter Set is compatible with the Sta-Rite model S8D110. Comprised of 13 grids: 3 FG 3916, 2 FG 3011, FG 3015, FG 2016, and 4 FG2019, you'll have everything you need with these 2 replacement filters. With an appropriate cleaning schedule, you'll ensure to help both the performance of the filter and keep the filters from breaking over a longer period of time. However, these filters are not a permanent part, and standard use will result in the need for a replacement. If your pool or pond area measures 53 square feet, these 2 Complete Replacement DE Filter Grid Sets from Unicel are the filters you've been missing.