UVC Bulb 25 Watt Germicidal Sterilizer 254nm 120V E26. Self ballasted quartz lamp. Up to 13,000 hour life, average lifetime 5,000 hours. Has E26 medium screw base for easy installation in lamp socket. Operates 120 volts AC. Non dim-able. Great for destroying coronavirus, MSRA, MER, H1N1 and other bacterial and viruses. Please make sure all persons and animals are not in the room when the lamp is on. CE and Rohs. WARNING: To guard against injury, basic safety precautions should be observed, including the following: Avoid exposure to direct or reflected germicidal ultraviolet rays. Germicidal ultraviolet rays are harmful to the eyes and skin. The M.O.L. is 8.25" by 1.965" diameter. CE and Rohs. Please see UVC certification. The measurements on the UVC specifications are at 1 meter.