A print unit has a transport path for stock, which path defines a direction of transport. The print unit comprises at least two suction boxes, having inlet openings which point in the direction of the transport path for the stock. The inlet openings of the suction boxes extend along an inlet length which corresponds to a working width of the print unit. The suction boxes are arranged next to each other in a transverse direction. These suction boxes can be removed from the print unit individually and independently of each other. The suction boxes may each be connected to the same common suction line by flow connections.