Industrial Lighting Solutions UVC-WUVLAMP8 PWUVBULB8 UV Bulb 8 GPM 30W, 7100165 Effective Hours Rating: 10,000hrs - Ultraviolet Germicidal Light Bulb Base Type: 4pins ONE END Length: approx: 24.5" Bulb Type: T5 Style Quartz Glass Highest Quality Compatible Bulb at one Third of the Cost