Abstract: A folding box and a flat material strip for producing same are provided. The flat material strip has four wall elements, each of which is connected to one another via mutually opposite lines of weakness and a fastening tab on one of the two outer wall elements. At a lateral edge of the wall elements, four first stiffening elements adhere to the wall elements via a respective line of weakness. At the edges of the first stiffening elements, which are opposite the wall elements, four base elements adhere to the first stiffening elements via a respective line of weakness. Two of the base elements are designed as dust tabs. The two other base elements have a fastening region and adhere to the base tabs via a line of weakness. The dust tabs can be fastened such that the four base elements can be put together to form a glued base.