PoolQuip 48 sq ft DE Grid Set. Product Specifications : The PoolQuip grids for a Hayward DE 4820 Filter Grids set includes 7 full grids and 1 partial grid, offering a total filtration area of 48 square feet. Filter Material : Constructed from durable PET resin. Compatibility : This DE Filter Grids set is compatible with models such as Hayward DE4820, Unicel FS-2004, PFS2448, Filbur FC-9540, and MicroClear DE4800, ensuring a perfect fit and reliable performance for your filtration system. Superior Filtration : Built with high-quality ABS material, these pool DE filters provide excellent filtration by capturing hair, dust, sand, algae, and even microscopic particles, ensuring your pool water remains crystal clear. Durable PET Resin Construction : Made from non-toxic, odorless, and corrosion-resistant PET resin, PoolQuip DE filter grids are designed to be mildew-resistant and easy to clean. Simply rinse them with water after removal to maintain their efficiency. Peace of Mind Guarantee : We stand behind the quality of our product. If you encounter any issues with the 48 sq. DE filter grids, please don’t hesitate to reach out to us for assistance.