Airstream
 

Richard,
thanks for that info! That's helpful.
The sections I'm thinking of working on are on the very lower area of the trailer and covering up a few holes that will be left from vents that will be removed.
If I wanted to buy the same type of material (I won't need those large panels, just smaller patches and such) is this the type of product I'll be looking for: http://www.aircraftspruce.com/catalo...eet_2024t3.php

WAIT! I answered my own question... love that Google. Here it says that this is used for Airstream repair... http://www.myaluminumsupply.com/cart...index&cPath=17

Thanks again for the info!