Hayward SwimClear C4020 25 30 Filter Cartridge 106 Square Feet 4 Pack reagent size_10 grams This pool depth marker states This pool depth marker states NO RUNNING and is printed with 4 Inch letters and has an overall size of 22 Inch x 6 Inch This is a Multiport Valve Top O ring for the Pentair 1 1 2 inch 6 way HiFlow Multiport Valve The Hayward CX880XRE filter cartridge (pack of 4) has a media area of 106 square feet and is made of superior reinforced polyester pleated material with molded end caps This cartridge is individually packaged with the Hayward name on end caps and plastic wrap to identify as genuine Hayward parts