5 Stage Undersink UF Water System 1.Filter cartridge,housing style/color are optional 2.Available port:1/4" 3.Manual flush 5 Stage ... Ultra-filtration Water purifier1-Features:the ultra filter membrane is made of ... .Five stage filter: PP , UDF, CTO, Ultra Filter, T33.5.Available water inlet and outlet port:1/4", 10" housing;6Max working ...