36-Watt Coralife Compatible 05744 12X Turbo Twist UV Replacement Lamp,36W, 2G11 Base 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" Compatible Bulb Guaranteed to meet or Exceed Original Manufacturers Specifications