We have this feature wall in the back yard which is a cement sheet mounted on our colour bond fence. This cement sheet is already worn out and has started to fall apart as you can see in the picture attached. We want to change this sheet and get a strong structure instead as we are thinking of mounting laser cut screen design light box that is pretty heavy as it’s made of Corteen steel please see sample of the light box we intend to install . Given there are 3 boxes each weighing 50kg we need something solid to replace the existing cement sheet, that can hold with wind and other factors to consider given its outdoor. We dont want to have a brick wall as that would look too thick and odd so something that looks aesthetically nice and slim but strong to hold 150kg appreciate your assistance.