Compatible with Unicel FS-2004, PFS2448, Filbur FC-9540, Hayward Pro-Grid DE4820/DEX4800DA, MicroClear DE4800-Verify your model before purchase. ABS material makes it lighter and Solider; Reinforced Grid Stitching can prevent tearing under high pressure. No tools or adapters needed, Ready to install straight out of box. Warm tips: Be sure to measure the size of the old product before placing an order. Identify 24-inch DE Filter Grid. If any question, pls contact us. FS-2004 DE Grid Pool Filter Set (48 Sq.Ft) – Compatible with Unicel FS-2004,PFS2448, Filbur FC-9540,Hayward Pro-Grid DE4820/DEX4800DA,MicroClear DE4800 – 24'' DE Filter Grid (7 Full + 1 Partial Grids) Note: This is a compatible spare part and the manufacturers' names and part numbers have been used for reference purposes only.