Abstract: A sign display system arranged for connection to a product display system having vertically oriented upright supports, the upright supports including a face arranged in a vertical plane and having a plurality of slots formed therein. The sign display system includes first and second mounting brackets, first and second extension arms, and a sign support assembly. The first and second mounting brackets each include at least one tab insertable within the slots at connection points. The first and second extension arms each have a first end and a second end, the first end connected to the respective first or second mounting bracket and the second end extending away from the mounting bracket at an angle. The sign support assembly is configured to support a sign, the sign support assembly is supported by the first and second extension arms and has a top side and a bottom side. The bottom side of the sign support assembly is supported vertically above the connection point.