Hayward replacement cartridges are designed to meet the high-quality standards set by the NSF—an independent quality and safety certification company—and are the only replacement cartridges that maintain original Hayward filter fit and performance. They provide maximum hydraulic efficiency, exceptional first pass debris removal and multi-season durability for Hayward filters.

• Specifically designed to maximize performance of Hayward cartridge filters
• NSF certification requires the use of Hayward Genuine Replacement Filter Cartridges for Hayward filters
• Precision-engineered molded and extruded cores provide maximum hydraulic efficiency and overall structural stability
• Available in economical 4-packs to accommodate multi-cartridge filters