Single-end H shape UV germicidal lamps CHARACTER:A.long ... 553MMFor exampleZW95D15Y-Z1550 stands for:UV germicidal lamp,95W,single-endedD,OD 15MM,ozone produceYozone freeW,tube length ... 1550MMFor exampleZW95D19Y-Z1554 stands for:UV germicidal lamp,150W,single-endedD,OD 19MM,ozone produceYozone freeW,tube length ... 15MM,ozone produceYozone freeW,tube length is 1554MM Single-end H shape UV germicidal lamps