Anyray ASEUV-14W 14 Watt Replacement For UV Bulb Ultraviolet Germicidal Classic Pond 14Watt 14 Watt Replacement For 14W Gamma sterilizer 14-Watt Anyray ASEUV-14W Base: T5 , 4-pins on one side , Bulb is 15-millimeter wide, 11-1/2-Inch in length and fits the T5 base 4-pins length: 11-1/2" Inch or 29.21 centimeters Long Life 10,000 Hours , 100% Ozone-free 253.7nm Germicidal Ultraviolet Light UV Bulb , LAMP Prevents DNA of germs to reproduce . 15Watts