Water Master - WG-12D UV Light Bulb for Germicidal Water Treatment HOK-1600 Guaranteed 100% Compatible Replacement Ultraviolet

Guaranteed 100% Compatible Replacement Ultraviolet (UV) Lamp - Mercury Wavelength - 8 Inch Arc Length - 13-5/8 Inch Total Length (end to end)

It allows higher UV wavelength to pass through it

The Sunlight Systems - LP4840 UV Light Bulb For Germicidal Water Treatment comes with a dielectric two pin split and has an average lifespan of 10

We do not sell EFI brand UV lamps

Water Master - WG-12D UV Light Bulb for Germicidal Water Treatment HOK-1600 Guaranteed 100% Compatible Replacement UltravioletGuaranteed Replacement Ultraviolet (UV) Bulb Miniature 2 Pin (bipin) 38 Watts 31. 3 Inch Length Lamp Worry Free Performance for 1 Year The Water Master WG 12D UV Light Bulb For Germicidal Water Treatment is a 38 watts miniature two pin lamp that has an average lifespan of 10,000 hours. We recommend that you replace the light bulb every year for better performance of the system. When water passes through the UV water treatment system, the