Looking for a monitor/tv solution to replace a 4'x12' painting.

We have a large painting in one of our offices that the owner would like to swap out with multiple monitors or one giant monitor/tv.  I'm reaching out to y'all in hopes that one of you have some A/V experience and knows of a vendor that sells zero edge displays or minimal edge with no branding.  Something tells me a 4'x12' single unit would be insanely expensive.  My budget is probably around 5k$, so please keep that in mind.  I'm willing to do all the labor and heavy lifting...  

Please help point me in the right direction!

Thanks!
Chris