Rondel Elliptical Dome - DM9904-54https://www.crownmoldings.net/media/ecom/prodsm/rondelellipse-sm.jpgClassic Ceilings Collection Rondel Elliptical Dome (DM9904-54) -- Dome Dimensions: Dome Outside Diameter: 41 in. x 54 in., Dome Rough Opening: 35-1/2 in. x 48-1/2 in., Dome Opening Depth: 7-1/2 in., Dome Medallion Size: 10 in.Classic-Ceilings-Collection-Rondel-Elliptical-Dome-DM9904-540.00Classic Ceilingsin stockhttps://www.crownmoldings.net/Item/Classic-Ceilings-Collection-Rondel-Elliptical-Dome-DM9904-54