No thinking about it... measure the thickness of a good part close to where you want the repair and you'll "know" what you need.
The idea is to replace with the same, and understand that these parts were formed and stretched so as a flat sheet they may have been one thickness but with any shape to it the thickness in different areas can vary some. Simply measure and replace with the same as needed.
16 gauge happens to be within a couple thouthanths of an inch of 1/16" or about 0.0625". I forget the others but you can look it up.
Last edited by Grigg; 08/27/2011 11:35 AM.