36 Watt 110V Aqua Medic Helix Max UV Sterilizer Bulb 2G11 Base #80836-8 Effective Hours Rating: 10,000hrs - Prevents DNA of germs to reproduce Bulb Type: T5 Style Quartz Glass, Ultraviolet Germicidal Bulb UV-C 254nm Length: approx: 16.375 Aqua Medic Helix Max UV Sterilizer Bulb 2G11 Base #80836-8