Rondel Elliptical Dome - DM9904-78https://www.crownmoldings.net/media/ecom/prodsm/rondelellipse-sm.jpgClassic Ceilings Collection Rondel Elliptical Dome (DM9904-78) -- Dome Dimensions: Dome Outside Diameter: 58-3/4 in. x 78 in., Dome Rough Opening: 54 in. x 73-1/2 in., Dome Opening Depth: 10-1/4 in., Dome Medallion Size: 14 in.Classic-Ceilings-Collection-Rondel-Elliptical-Dome-DM9904-780.00Classic Ceilingsin stockhttps://www.crownmoldings.net/Item/Classic-Ceilings-Collection-Rondel-Elliptical-Dome-DM9904-78