Hayward Star-Clear II C1100 Filter Cartridge - 100 Square Feet state_Oklahoma The case is made of

The case is made of molded polypropylene

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Hayward Star-Clear II C1100 Filter Cartridge - 100 Square Feet state_Oklahoma The case is made ofThe Hayward CX1100RE filter cartridge has a media area of 100 square feet and is made of superior reinforced polyester pleated material with molded end caps. The precision engineered extruded core design provides maximum water flow while reducing energy cost. And the reusable filter cartridge provides a high degree of water clarity and longer filter cycles. Hayward filter elements are designed to meet NSF's high quality performance and durability