LSE Lighting GPH843T5L/LS/40W Ultraviolet 40 watt UVC Lamp Brand: LSE Lighting - Professional Ultraviolet Lighting Length: approx: 33" (843mm) - Base Type: 4pins ONE END Effective Hours Rating: 12,000hrs Watts: 39W (compatible as 38W-41W replacement) Bulb Type: T5 Style Quartz Glass