A sealable folding box in the shape of a parallelepiped or cube with attached bottom and cover flaps and an attachment flap—is provided with an attachment recess—is that is arranged on an edge of the folding box body that extends between these flaps. To this end, the folding-box body—seen in the lengthwise direction of the matrix—has a sealing flap on one end and a combination section on the other end. The combination section consists of an inside area and at least one outside area, whereby the inside area is an attachment flap—provided with an attachment recess—while the outside area is used to attach the combination section to the side wall with which it is in contact. With the invention, a folding box is provided that can be handled simply and reliably in production, storage and filling, that encloses the contents largely dust-tight and that can be marketed stacked or suspended.