PL-L24W/TUV 24 watt Germicidal UV UV-C Bulb Lamp 2G11 4pin Base SuperLIFE - 10,000hrs - Super Quartz glass UV UltraViolet Compatible replacement for Water and Air Sterilization Type: Ultraviolet Germicidal Bulb UV-C 254nm Base Type: 2G11 Length: 12 1/2" (including plastic insert)