30 Shot Glass/Shooter Display Case - Enclosed Cabinet Rack Holder, Ebony All displays include two routed slots on back spaced at 16" on center for secure wall stud mounting Display dimensions are: Height =18" Width = 27 1/2" Depth = 4" Shelf Dimensions are: Width = 20" x Depth = 2 1/4" Each shelf will hold glasses up to 4 1/4" tall. Placement hole diameter = 1 5/8" The sliding Acrylic door opens from either direction allowing convenient access to your collection.