The 48 Sq Ft Purex DE Filter Grid set is specifically designed for Purex SMBW 2000 and SMBW 4000 Series Diatomaceous Earth (D.E.) filters, offering 48 square feet of filtration area. Constructed with high-quality materials, this grid ensures efficient filtration and durability, capturing even the finest debris to keep your pool water crystal clear. This grid set plays a crucial role in holding Diatomaceous Earth powder and distributing water evenly, promoting a smooth flow and maintaining optimal filter performance. The set of 8 grids is perfect for achieving superior filtration and extended durability.