Emperor Aquatics Hydromax 37 Watt Replacement UV Lamp

The 37 watt Replacement High-Output UV Lamp for HydroMAX Pond Filters is made of high quality quartz glass and offers 13 months (9,000 hours) of continual operation of lamp life. The 37 watt ultraviolet lamp has a length of Length of 16.5" and a diameter of 0.75".