... ) size: 20" 2) Main Ingredient:100% food grade polypropylene PP Water Filter Cartridge Item No. DK-20DPPLength 20"(or as per your ... removing bacteria,chlorine,unpleasant smell,odorFeature Comparing with PP string filter cartridge,it has better chemical durability and longer service life ... ,Category grooved type,flat type,press line typeApplication for big filter housing pp water filter parts