The Hi-Tech Lamps part number G6T5-O is a 6 watt (6W) UVC germicidal lamp made by Osram. This lamp has maximum overall length of 8.91in. It is a T5 bulb with a G5 miniature bi-pin base. The average rated lifetime of this lamp is 8000 hours. This lamp is also known as Osram G6T5/OF and 23399.