Wall information display Poster Window convenient, quick and transparent: the patented information pocket for single sheets flap can be mounted to all smooth surfaces with transparent double adhesives. We recommend Poster Window especially for glass, as it is perfectly for double use: mounted inside - visible from in- and outside. the polycarbonate die-cast is long-lasting and scratch resistant. to open it, just slide up gently the front cover and then you can swing it open or remove it completely. the sign display holder is perfect for the simple door signage or price tag holder.