Replacement Water FilterMulti-function PrefilterContact Us to PurchaseFeatures Multi-function provides high efficient filtration. PP removes sand, silt, dirt and rust particles. Carbon removes chlorine, chemical pollutants, odor and color. Specification Model Type Spec. Remark FT-3004 multi-function prefilter (PP/CTO) HS-7/CHS use only Note Do not use where the water is microbiologically unsafe or of unknown quality without adequate disinfection before or after the unit. The system is to be supplied only with cold water. The system and installation shall comply with applicable state and local regulations.