High-quality, reinforced polyester elements provide maximum filtration area and easily trap dirt and debris. * Precision-engineered extruded core design provides maximum water flow while reducing energy cost. * Consistent with Hayward high quality and compatible with all Hayward specified chemicals. * Diversified sizes to meet both above-ground or in-ground cartridge filter applications. * The replacement cartridge for the Hayward filter is made by Pleatco * 90 sqauare feet filtration area capacity * Filter element replacement to trap dirt and debris * Fits hayward c900 star-clear cartridge filter * Measures 9-1/16 inch outside diameter by 17-3/8inches in height * Weighs 7 pounds