double ended 150w rx7s metal halide lamp 1.HQI-TS 150W/ ... 150W/NDL 4200K RX7S-24 3.HQI-TS 150W/WDL double ended 150w rx7s metal halide lamp1.POWERSTAR HQI-TS metal ... low thermal output.4.Indoor applications:Factories,shop interiors,shop windows,foyers,hotels,restaurants,trade fairs,exhibitions,offices,schools,sports halls ...