Here is a link to OER's catalog. The glass for our trucks is on page 235.
http://www.oerparts.com/Catalog/OER2016_Cat_Web.pdf
They offer the windshield four ways.
I ordered part number CT6772T for the windshield and BT67724T for the back window. I ordered these through Summit, not directly through OER. I don't have a calipers, but I can try to measure thickness the best I can with a scale.