Product details:

Focal Point 30 in. British Victorian Medallion (81030) -- Ceiling Medallion Dimensions: Ceiling Medallion Length: 30-3/8 in., Ceiling Medallion Overall Width: 21 in., Ceiling Medallion Canopy: 5 in., Ceiling Medallion Projection: 2-1/2 in., Ceiling Medallion Center Hole: 4 in.