CureUV Brand UVC Bulb for G18T5L/4 4 Pin Coating:None The PowerMap is the smallest

The PowerMap is the smallest four-band UV radiometer on the market

This high performance lamp is 562 mm long and has a factory warranty of 600 hours

Guaranteed 100% Ultraviolet (UV) Reflector Compatible for American Ultraviolet Part # A94121MCB UV Lamp Bulb

Both lights are guaranteed to be 100% compatible with the Viqua SSM-39

CureUV Brand UVC Bulb for G18T5L/4 4 Pin Coating:None The PowerMap is the smallest4 Pin on a Single End 18. 4 Watt Germicidal Water Treatment Bulb Our CureUV brand Replacement UVC Light Bulb for G18T5L 4 is an 18. 4 watt that has a total length of 15. 19 inches and a four pin single ended base style. This UVC light bulb can last up to 10,000 hours and usually has up to 12 months of life after which we recommend replacing it for optimal effectiveness. The replacement bulb is made using ceramic as the base material and comes in a non