The Martin Yale CR828 Semi-Automatic Paper Creaser creases a panel of up to 28" wide and 18.2" long. This creasing machine is quick and easy to set-up, simply remove from the packaging, install the paper stops, plug in and done! It is equipped with hard-anodized aluminum paper guides/paper stops to secure your documents firmly in position for a more accurate crease every time. Plus, it has a durable steel construction that will stand for many years of use. If you want to have a professional quality literature production, then this Martin Yale CR828 Semi-Automatic Paper Creaser is a must have.