G36T6L/4 Ultraviolet Sterilizer Bulb
G36T6L/4
Type: 33 1/4" Germicidal Lamp
Connection: 4 pin one end
This bulb might not necessarily be manufactured by your utraviolet system's manufacturer, but it functions correctly as a replacement for this system.
Manufacturers recommend changing your UV Sterilizer Bulb once a year.