... hole size98mm132mm180mm219mmMaterialAluminumAccessoriesDie casting,Heatsink,PC cover,Screws,Buckle and SpringUsageIndoor use 2013 Supply Aluminum 3'' 4'' 5'' 6'' 8'' LED Downlight housingShapeRoundTrade ... :1.MYK-D9003 LED Downlight shade housing outsize:3inch dia:100mm,cut hole size:98mm2.Accessories include: Die casting,Heatsink,PC cover ...