I was a little bored today so I thought I would draw this up in CAD so that if anyone needed to, they could make their own. It should print out on a 1:1 scale so all you need to do is cut it out and trace the outside, then use a punch to locate the holes using the + in them and drill/cut them out. Or you can take this to a fab shop and have them burn it out on a laser/plasma cutter. Hope this helps someone in need. I can provide a .DXF or .DWG file for use on a laser/plasma cutter, the site will not allow me to upload them here.
Edit: the material thickness is between 14g and 1/8" so pick your poison.