Abstract: The printed product to be opened is moved with an open side thereof towards a stationary opening element. The bottom part of the printed product contains at an open side, located opposite to a fold of the printed product, a marginal zone or portion by means of which the sheets of this bottom part protrude past the sheets of the other part of the product. The opening element has an inclined deflector aligned with the protruding marginal zone extending parallel to the direction of product travel. The printed product approaching the opening element is raised by means of a ramp prior to the leading edge of the producing marginal zone or portion abutting against a deflecting face of the deflector. By means of the deflector the sheets having the protruding marginal zone are downwardly deflected and thus are separated from the remaining sheets. An opening is thus formed between the two parts of the product, and a support element arranged after the opening element enters this opening.