4'x12' acrylic mounting

[tsgstl]

I have a large acrylic 4'x12' to mount over a display case in a arena.

It existed before with a aluminum similar to a awning type frame 1" square. It also had awning type material that was printed with their logo and corporate sponsor. I am ready to go and I was just going to screw it to the existing frame, and set it up in place using the existing hardware. The install got pushed off until next week now and they originally wanted no screws showing. This thing is up flat mounted against the front of a large display case showcasing numerous awards and whatnots. I did not feel comfortable using any type of adhesive knowing that if this thing fell it could injure anyone under it.
Any ideas as to installing this to the frame without screws showing on the face?

 

[J Hill Designs]

nope. I would be a little wary of screwing it on, as well. perhaps a retainer system out of 1.5"x1.5" aluminum angle

 

[MikePro]

use this stuff all the time:

only visible hardware are the counter-sunk screws for the end caps.

Extruded Aluminum SignComp Wall Frame

 

[Mosh]

+Aluminum Retainer

 

[tsgstl]

thanks a ton guys, I have plenty of it laying around from other projects. I didn't want to go with plex in the first place but apparently its the only sheetgood available in 12' anymore without waiting for a special order.

 

[Mosh]

flex-face it...way

 

[tsgstl]

they lost there sponsor and wanted a easier cleaner way of adding/subtracting future corporate sponsors