The DE4820 Filter Element is a heavy-duty replacement filter grid designed for use in the Hayward Pro-Grid DE4820 filter. Constructed from durable polyester with a reinforced core, this 24” grid provides 48 square feet of filtration coverage. It effectively supports Diatomaceous Earth powder, ensuring superior filtration by capturing even the smallest pool particles. This filter element helps maintain crystal-clear water and enhances overall filtration efficiency, while also ensuring minimal load on the pool pump.