Clear form and functional design: The Click Sign door sign seamlessly integrates into any environment with its simple design. Particularly suitable for large-scale use, such as in educational institutions, hospitals, restaurants, etc. It can be screwed on or alternatively glued. Comes with a mounting kit and instructions. Compatible computer-printable cardboard inserts are available. The easy replacement of the cardboard inserts is ensured by fully pulling out the viewing window. The window can be pushed up and folded forward. After inserting or replacing the insert, the window is pushed back up and securely clicks into place within the frame.