Thanks guys,

I am doing 6 but they are on the sides of an existing box so it is not
flat sheet. I am using a CNC bed mill so using the right dimensions
just makes good sense.

http://www.grainger.com/Grainger/items/3A927

I know I could reverse engineer one, but as I have stated, and now
find to be true, there must be some drawings out there. And indeed
there are.

Problem solved.

Dave