Trying to figure out this piece...

DenJ91 · 2015-12-26T03:12:04.000Z

I saw a picture of this display that I really like and want to replicate. What is the black (obviously) rounded edge piece that gives it the smooth front edge look? I think it's a slope 2 x 4 x 4 with studs, but I've blind searched brick link with no luck. it's a flat piece at the top where the studs are so it secures bricks underneath. Help would be fantastic.