It is just a 8inch brace. Cut one side of it and re-drilled holes to line up. My camera mount plate was 7.5" long so i crafted the rest to fit that. 10" wide. 8" tall. Brace was 50 cents cheaper and home depot though. haha
http://www.lowes.com:80 …Ntt%3D8%2Binch&facetInfo=![]()
I would suggest 7" tall cause there is plenty of room between cam and top rail. The 10" wide rail is perfect and 7.5-8" front to back is just right too.

