Savio RU5005, SUV050A 50 Watt 18" Germicidal 4 Pin UV UV-C ,BULB 10,000 Hours Effective Hours Rating: 12,000hrs - Ultraviolet Germicidal Light Bulb Savio RU5005, SUV050A 50 Watt 18" Germicidal 4 Pin UV UV-C ,BULB Bulb Type: T5 Style Quartz Glass Base Type: 4pins ONE END, Approx 17" in Length