We can supply Window Sills (Granite Window Sills, Granite Threshold) as per your customized requirements. Material:natural granite,marble,quartz stone,etcRegular Size: 60" - 70" (Max ... , chimney caps, quoins, string course, coppings, paving stones, countertops, slabs, tiles, tombstones, kerbstones, cube stones, etc. Window Sills (Granite Window Sills, Granite Threshold)