Ekena Millwork CM29X38CAPCC Hand-Painted Cathedral Ceiling Medallion - 29 1/8" Height x 38 1/8" Width x 1 3/4" Projection - Pot of Cream Crackle Finish - Perfect for Dining Room, Foyer & Victorian Home Decor

This went up easy, was easy to saw a hole through to mount a chandelier under it, and coordinates very well with the original 19th century plaster medallions in my house, all of which have square corners in the design like this one does. Good price too. I found the same thing available several places elsewhere at much higher price. It's quite thick in profile, just like the real plaster ones, not flat at all, which helps it blend in with the originals.