You can easily change the poster by opening the front profile. 2 Anti-reflex PET covers the use; posters can be displayed both indoor and outdoor. The system includes decorative back profile to hide the double-sided adhesive tape which holds the frame to the window. Double PET cover. Double-sided tape around the frame internal and external. Each Window Frame is packed individually in a cardboard box. Please clean the surface before applying the double-sided tape for better application. Suitable for silk screen printing, maximum letter height is 0.675" (15 mm).