THO 7500 HThe Original Theimer THO 7500 H is a high quality bulb made with the finest raw materials. It is designed to provide high actinic output and long service life. The optimized spectral output guarantees rapid curing and short exposure times with the industries best dot to dot quality. The 369 mm long THO 7500 H has a typical lifetime of 600 hours. optimized spectral output short exposure times short curing times customer approved Length: 369 mm