36 Inch by 26" Oval Ceiling Medallion White Primed Polyurethane #598 By Designer's Edge Millwork easy to install with glue or nails. Cut center for light installation. Center is 3 1/8".Outside thin ring is 3 1/2". Outside thick ring is 5 1/8" Primed- ready to paint and or stain High density polyurethane for lightweight product Resembles original plaster medallions. Won't warp, split or splinter