A device for suctioning of waste products of a production machine, particularly a sheet extruder, with a suction chamber. At least one suction element extends into a suction space located outside the suction chamber in order to convey waste products in the suction chamber. A suction unit develops a negative pressure in the suction chamber. A sealing means abuts the suction element and locks the suction chamber in a way such that the suction element is movable along the sealing means. The position of the suction element at the suction chamber is variably adjustable.