Where can I find this bracket?

[Aklaim]

My company has taken over a large job from a company that was fired by the contractor. I need to find this EXACT bracket to finish the job because some of the walls have already had the receiving bracket installed. It's a 2 piece bracket that interlocks with itself. It's being used to mount large full color prints on gator foam to a wall. I've never seen it before and I'm really hoping somebody on here will be able to point me in the right direction. Thanks a bunch!

Will

 

[SignosaurusRex]

Z-Hanger Hangman Products

 

[Billct2]

They're often called a french cleat. Lots of sign and large format suppliers carry them.

 

[briankb]

I've seen them (or a variation) at my local Home Depot in the picture hanging area.