... ) Good in photochromism, concentrate light beam, convenient use, 2,000-hours average life-time. 2) Applications: illumination for house, shopwindow, display hall ... ) Base Bulb Max Length(mm) 790921 RF-H100W 110 100 E26/E27 R120 157 790922 RF-H150W 110 150 E26/E27 R120 ... 300 E39/E40 R135 211 790925 RF-H500W 110 500 E39/E40 R160 238 790926 RF-H1000W 110 1000 E39/E40 R180 ...