The 36 Sq Ft Purex DE Filter Grid is a high-performance component designed to optimize the filtration process in Purex pool and spa Diatomaceous Earth (D.E.) filters. Providing 36 square feet of filtration area, this grid ensures efficient filtration by capturing even the tiniest particles, resulting in crystal-clear water. It fits the 36' models of Purex 1000 Series, 2000 Series, and 4000 Series filters and is an essential element for superior filtration performance, helping to keep your pool system running smoothly.