Miller Engineering's expanding line of window signs are a great addition to our roof top signs. Simple to install and a pleasure to look at, they come on a clear background that can be trimmed as small as .825 inches wide x .9inches tall.  They run on 4.5 volts DC just like all our other billboards and are compatible with our AC adapters and #4804 converter modules. Like all Miller Engineering signs, they come ready-to-run.