The G22T5/SP (100 pc. min.) is a 22 watt preheat start, ozone free Germicidal (AKA 254nm or UVC ) Lamp with 6 Watts UV. Typical lifetime is 9000 hours. This lamp has two Fa8 single pins on the 15.5mm diameter x 436mm long (excluding pins) clear T5 tube. This item is Made in Japan by Sankyo-Denki, and is also commonly available from very few sources as part numbers 3000347, G22T5/436/Fa8 and GPH436T5L. Product Warning: Germicidal lamps emit harmful ULTRAVIOLET RADIATION (UVC). Avoid direct or reflected exposure as this can cause serious skin burns and eye injury. This lamp SHOULD NOT BE USED FOR ILLUMINATION PURPOSES. Skin and eye protection should be worn at all times when operating.