Product circumference: 47cmShelf: Widest point: 13cm Smallest point: 9cmGap between shelf and the circle top: 30cmSelf assembly required. Comes flat packed with wall mounting kit, which includes: 2 x shelf screws 2 x shelf to wall brackets 2 x dowels 2 x plasterboard plugs 2 x wall screws If your shelves are going into a thick brick wall, plasterboard plugs will not be needed.