Enjoy your time in the water and get the ultimate pool maintenance solution with this 2-pack of Unicel FG-1004 DE Grid Replacements. 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 the grids 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, these grids can be used as an in ground or above ground pool filter. Please note that each filter measures 24 inches long and 11 inches wide. To replace the entire set, 8 grids are needed. This 2-pack of Unicel FG-1004 DE Grid Replacements 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.