14 Octagonal diameter measurement. Very nice piece of Vintage shadow box display. Miniature Doll House room boxes, different art work of doll House room. Heavy duty and made of hardwood material. Has a clip for Hanging. All the miniature items are intact. Glass has a little dust from the inside. See photos and zoom in as they’re part of the item description. We encourage buyers to ask questions, do your own research, read descriptions and zoom in pictures. We describe items to the best of our ability but are not experts in any field. Most vintage items are pre-owned unless otherwise specified and may contain imperfections that are unnoticed by us. This may include but not limited to dust, scuffs, swirls, fading, discolorations and minor nicks here and there. Most will be only visible upon close scrutiny consisting of minor cosmetic flaws and does not impair overall appearance and function. Minor cosmetic issues are consistent with normal wear and previous storage of vintage/ antique items. Please check out our other listings, serious buyers with offers are welcome. Thank You for supporting our small business!