The Pleatco PHG3060 Universal D.E. Filter Partial Grid Replacement (60 Sq. Ft.) is a replacement D.E. partial grid. Featuring a strong but lightweight frame constructed out of ABS, this grid withstands the tests of time and takes stress off of the high-performance polypropylene fabric and reduces splitting and tearing. The seams are stitched with a chemical resistant 4-ply thread for longevity.