Like This?

Basically one side, both ends, and the bottom of a black plastic wash basin with mounting trim added around all the edges.
This is the one in our Escapade, and the blue ruler is stuck into a crack which runs the length of the back edge of the bottom. I can only figure it wasn't supported underneath and somebody's weight stressed it to cracking.
I went to take ours out to replace the little LED lights under those little bezels. And maybe space it up, after adding tape or the like to seal the crack. I forget what the exact problem was, but it seems to be sprung into place somehow. I felt I'd probably break it (which Donna can apparently affirm) so I've left it alone.
I'd buy one if I could ID it.
If somebody can provide the correct name for this little thing, maybe we can gOOgle and find it.
We should start an emotional support group for Escapade owners...