The outer screw fixing mechanism is perfect for menus that continuously change and grow. You simply punch your paper or card using a four way hole puncher and line them in between the front and back cover, so that it all opens like a book. Taking your four screws, secure them into the holes (so that they also run through the punched menu cards) and then twist on the backs. You should now be able to pick up your menu cover from the spine and shake without any cards falling loose.
PVC pockets can also be used with this design, but please make sure to specify this at the point of sale so our manufacturing team can ensure the spines are made a little wider in order to keep the cards flush to the cover.
Please note, A5 menu covers with external screws work using a standard two hole puncher.