Mark Andy Part # K-HT-4280 UV Curing Lamp Bulb 12 500 358 while the quartz plate acts

while the quartz plate acts as a filter to protect the lamp

It requires an annual replacement to maintain its efficiency though it may continue to emit light

Overall Length: 10

The curing lamp has wattage of 300 WPI and a tube diameter of 25

Mark Andy Part # K-HT-4280 UV Curing Lamp Bulb 12 500 358 while the quartz plate actsGuaranteed 100% Compatible Replacement Ultraviolet (UV) Lamp Mercury Wavelength 8 Inch Arc Length 11. 63 Inch Total Length (end to end) The Mark Andy Part # K HT 4280 UV Curing Lamp Bulb is a compatible replacement UV lamp bulb that is filled with mercury and has an arc length of 8 inches. The lamp bulb exceeds OEM standards of UV curing bulb performance and is completely compatible to the Mark Andy UV systems to the following part numbers: KHT4280