Modular Curved Frame Technology  units allows the custom fabricated look insert of signage material, such as posters and adverts to be interchangeable. Signage units can be freestanding, wall, ceiling or pedestal mounted. This system is designed to use paper, engraved, embossed, screen printed substrates, photo-metal, photo-polymer, vinyl graphics, and photo-luminescent signs inserted into the frame. It has seal end caps which prevent vandalism. This system has a high degree of stability due to its tubular construction.