Contact a local frame shop for local suggestions.

Measure the wall with a steel tape measure, draw it out on graph paper and transfer your measurements onto the wall using blue painter's tape. If it doesn't look they way you want it too, go back to the graph paper and re-work it. Go through the blue painter's tape step again. Do this until you are happy with the look on the wall :). Buy masonry screws that are appropriate for the size and weight of your panels. You'll need a power drill or driver, the appropriate size bit and safety glasses. Don't use this project to learn to use power tools :D Get someone you trust or hire someone to set the screws into the wall for you. I don't have any experience with MDO, but I'm assuming you do, so I don't know how to advise you concerning the hangers you will need to attach to the panels, but I do know you will want to drill into the grout, not into the brick, so the placement of the hangers on the back of the panels will depend on where you had to put the screws into the wall. Hope this makes sense and that it is the information you need! :D

Hello, I am just curious if you figured out the answer. I too have an exterior painting that is 5'X8' on MDO. I am having trouble finding information on how to attach the hanging materials to the piece without damaging the front of the painting. I would be interested to hear how you installed your piece.

I have a 4x8 sheet of MDO I need to hang on a brick garage. What did you do?

To new posters, the easiest option is a French cleat which can be milled
From wood. One half gets screwed to the masonry wall with masonry fasteners, the other half gets screwed to the artwork with appropriate wood screws (stainless)