5W Replacement Therapure 201 UV HEPA-Type Air Purifier Ultraviolet 5 Watt 5 Watts Fits the G23 base, has one molded snap Anyray AUVC-5W Length: 4 inch Long Prevents DNA of germs to reproduce Long Life 10,000 Hours 100% Ozone Free Short-wave UV radiation with a peak at 253.7 nm (UVC) for disinfection purposes