Code Model no. Product Size (LxWxH) Difuzor Material 490580 HY/1203/1M 1000x18x18mm Opal Aluminum 490581 HY/1203/2M 2000x18x18mm Opal Aluminum 490582 HY/1102/1M 1000×15,9x6mm Opal Aluminum 490583 HY/1102/2M 2000×15,9x6mm Opal Aluminum 490584 HY/1103/1M 1000×15,9x12mm Opal Aluminum 490585 HY/1103/2M 2000×15,9x12mm Opal Aluminum