Guaranteed 100% Compatible Replacement Ultraviolet (UV) Lamp - Mercury Wavelength - 12 Inch Arc Length The Tec Lighting Part # MSHT 5380 UV Curing Lamp Bulb is a mercury filled lamp bulb that has an arc length of 12 inches. The 400 WPI lamp bulb has a tube diameter of 15mm and completely compatible to the Tec Lighting UV system. The lamp bulb exceeds OEM standards of bulb performance and works well with the following part numbers: MSHT 5380 5013-ISZT-A SC-1531 Ultraviolet (UV) Spectral Output - Mercury Lamp (PDF) *Hg - Lamp contains mercury - manage in accordance with your local disposal laws by visiting: www.lamprecycle.orgTec Lighting Part # MSHT 5380 UV Curing Lamp Bulb *All UV lamps listed are compatible brand UV products. We do not sell Tec Lighting brand UV lamps. All Tec Lighting brand names, trademarks and logos are property of Tec Lighting.