A wall tray is a great way to give a sign a little depth. As with the flat panels the majority of wall trays we sell are made from an aluminium composite but can also be made from a full aluminium for a cleaner finish and if powder coating is required.
Generally these are made with a 50mm deep return and are fixed to the wall with aluminium angle which is hidden behind the tray. The main advantage of a tray over the above flat panel is that the fixing screws are located in the top and bottom folds so there are no ugly screw fixings in the face of the sign.