Rondel Dome - DM9903-66https://www.crownmoldings.net/media/ecom/prodsm/rondelellipse-sm.jpgClassic Ceilings Collection Rondel Dome (DM9903-66) -- Dome Dimensions: Dome Outside Diameter: 65-3/4 in., Dome Rough Opening: 60-3/4 in., Dome Opening Depth: 12-3/4 in., Dome Medallion Size: 14 in.Classic-Ceilings-Collection-Rondel-Dome-DM9903-660.00Classic Ceilingsin stockhttps://www.crownmoldings.net/Item/Classic-Ceilings-Collection-Rondel-Dome-DM9903-66