A500 42RH Crossmember template?

Looks really great. A guy who just started working at the company I work for has a plasma cam setup. Said he could cut out the pieces for me. He said the pix for the cutter to use had to be formatted a certain way. He gave me a couple different 3 letter formats that his plasma cam could use. Which one is your drawings in ?? What thickness steel did you make this out of. I have a sheet of 3/16" steel I planned on using.

Dwg or dxf