PL-L18W/TUV - Germicidal Fluorescent - 2G11 4Pin Base 18 Watt PL-L TUV 18Watt Germicidal Fluorescent Ultraviolet Light Bulb 18W Anyray AUVC-18W 100% Ozone Free Short-wave UV radiation with a peak at 253.7 nm (UVC) for disinfection purposes 2G11 4-pin Base Long Life 10,000 Hours Germicidal Ultraviolet Light UV Bulb, LAMP Warning sign on lamp indicates that the lamp radiates UVC