ImagePerfect™ 2708 Perforated Window Film should be used on flat surfaces and is intended for indoor and short-term outdoor applications. It is an excellent option for retail displays on shop windows, for promotional advertising on cars and public transport vehicles (such as buses, coaches, taxis, trams, etc.) and for decorative applications on other building windows/glass panels. The perforations in the film are designed to allow the full image to be seen from the outside of the window whilst allowing for viewability through the film from the inside of the window. This product should not be exposed to cleaning fluids that contain solvent or ammonia. To obtain good through vision and protection against moisture and abrasion, we would recommend overlaminating.