Plain Light Cove Dome - DM9905-79https://www.crownmoldings.net/media/ecom/prodsm/covedomeinstalledplain-sm.jpgClassic Ceilings Collection Plain Light Cove Dome (DM9905-79) -- Dome Dimensions: Dome Outside Diameter: 78-5/8 in., Dome Rough Opening: 73-1/2 in., Dome Opening Depth: 15-1/2 in., Dome Rim Width: 3-3/8 in., Dome Medallion Size: 18 in.Classic-Ceilings-Collection-Plain-Light-Cove-Dome-DM9905-790.00Classic Ceilingsin stockhttps://www.crownmoldings.net/Item/Classic-Ceilings-Collection-Plain-Light-Cove-Dome-DM9905-79
Smooth plain cove surface can be left as is for a clean contemporary look or a decorative millwork trim can be added for a unique one of a kind appearance (would require 20 feet of flexible millwork trim)