Upper floor windows in retail buildings pose additional challenges when applying promotional signs and graphics. Often the windows are inaccessible from the front without expensive equipment such as “cherry pickers”. Contra Vision clear perforated window film for internal application offers a great solution, meaning that the installation is much easier and cheaper. The product offers the same benefits in terms of one-way vision window advertising and helps to reduce solar glare in retail or office space which is above the ground floor. Restricting window graphics to just upper floors allows passers-by to have a clear view into shops if this is desired.