Black Friday window sign in vacuum film 130x25 The window film is a vacuum film without adhesive. It is installed using water, not glue. Instructions for applying the window film: 1. Clean the pane in the area where the film will be placed. 2. Fill a spray bottle with water and a few drops of dish soap, and spray it onto the window. 3. Place the film on the window. 4. Smooth it out with a squeegee. 5. The film is now fully installed. If the film needs to be removed, simply peel it off; if you want to move the film, just follow the installation instructions again.