Ceiling Medallions Primed Urethane Ceiling Medallion 21 X 30 1/4 Ceiling Medallions easily add elegance to the entire room. Get your Ceiling Medallions here today. Urethane, more durable and more affordable than plaster or wood! 21 H x 30 1/4 W inch Resistant to warping, cracking and peeling Impervious to water and insect damage Comes factory primed and ready for a finish coat