Overhangs can be up to 10” unsupported on standard 3cm (1 ¼” typ.) material. On 2cm material unsupported overhangs may be up to 6”. If the desired overhangs are to be greater than 10” and 6” respectively, corbels are installed to provide additional support. In some instances where the stone is extremely fragile Northstar Granite Tops may reduce the length of unsupported overhangs allowed.