Abstract: A device for manufacturing stacks of product units, in particular of printed products is provided. The device includes a stacking device with a plurality of support units which in each case form a support surface for the stacks to be formed, furthermore a circulatory arrangement, in which the support units, arranged one after the other along a closed circulatory path, can be moved into and out of a stacking region. The support units moreover in each case include at least two support elements which are arranged next to one another. The stacking device includes a device for setting the distance between the lateral outer edges of the support units with a continued conveying operation.