Enjoy your time in the water and get the ultimate pool maintenance solution with the Unicel FG-1004 DE Grid Replacement. Each grid is engineered with fabric that is constructed with a high yarn count of fine denier fiber which yields an optimal permeability to ensure maximum efficiency and durability. Use this grid with DE powder for pool filter applications to trap dirt and debris down to an average of 2 to 5 microns. What's more, the filter media ensures less resistance to water flow, longer cycles between backwashes, and great DE caking properties for efficient debris and particle capture. Compatible with 48-square-foot systems manufactured by Hayward Pool Products, Pentair Pool Products, American Products, Pac Fab, Sta-Rite, Astral, Waterway Plastics, Jacuzzi, and Jandy, this grid can be used as an in ground or above ground pool filter. Please note that this is a single filter only. To replace the entire set, 8 grids are needed. This Unicel FG-1004 DE Grid Replacement is the clear choice to keep your swimming pool water sparkling. Why Unicel? For over 50 years, Unicel has been developing and manufacturing elements for both the pool and spa OEM market and the wholesale distribution trade. With quality components and 50+ years of experience operating and sourcing in the USA, Unicel is recognized as the industry leader.