Vista System flat table sign frames, or desk signs, support a variety of insert materials. Flat table sign inserts are typically done in paper where the sign copy changes frequently or in engraved material when the copy on the flat table signs is less prone to change.
A suction cup is used to remove the lenses from the flat table signs so the paper inserts can be accessed. For more information on flat table signs, lenses and suction cups check out the following video.