... ,the ceiling , ade,balconies and corridors,shutter,staircases and airport access stations,hotels,museums,opera houses, concert halls, office buildings, exhibition ... , the ceiling , shade, balconies and corridors, shutter, staircases and airport access stations ,hotels, museums, opera houses, concert halls, office buildings, exhibition ... .5 kg /sq Aluminum chain curtain from manufacturer (HT-ZSW-006)