Germicidal Ultraviolet T5 Lamp, G8T5, 8 Watt, 12 Inch, Mini Bi Pin, G5 Base, 254 nm, 6000 hour average useful life, Length 287 mm, Diameter 15.5 mm. Primary use for these lamps is sterilization of air and the surfaces of various materials and water or liquid. WARNING - The radiation output of these lamps is harmful to eyes and skin and can cause damage. Protect your eyes and skin against the ultraviolet rays.Price listed is per bulb. Call or email for case qty pricing. Item # G8T5.