Hi Lec,
Why don't you post a screen shot of what you have been "making up". Maybe after seeing it, someone will recognize a solution already out there.
Snap
I have a cabinet I wrote that can sort of do this. You would actually place two instances and the lines between them turned off. It's a bit more hassle than a single object, but works well none the less.
PM me if this is of interest.
Erich
AC 19 6006 & AC 20
Mac OS 10.11.5
15" Retina MacBook Pro 2.6
27" iMac Retina 5K