Replacement bulb for SunSun & Aquatop UV Sterilizers * Also works with JBJ 13W Submersible UV Sterilizer, Jebao PU13 clarifier, Jebao CF-10, CF-20, CF-30, PF-30, ViaAqua 13W UV Clarifier * Average Life Hour: 8,000hrs * G23 2 Pin Base * Power: 13 watts