AquaHouse AH-UV-25-S replacement quartz / glass sleeve Original replacment quartz / glass sleeve for AquaHouse AH-UV-25 - 25W UV ultra violet water sterilizer Suitable as a replacment if your existing quartz / glass sleve is broken. If you require a replacement lamp / bulb for your system please see item: AH-UV-25-L AquaHouse branded product, AquaHouse is a registered trademark