For A3 portrait bindings
Fastbind end papers glue the bound book block together with the inner surface of the hard cover. Each hard cover book requires two end papers.
Fastbind end papers use a special construciton on the glue side to ensure very high opacity. When a Fastbind end paper is glued onto the hard cover, no grey board or print pattern can be seen through it. A small glue-free area on the protective layer allows fast and easy removal to expose the glue.