Here is one:
https://cscmachine.com/frequently-asked-questions/
"For Tuff-Rib, Classic-Rib, Ag Panel, the gauge is normally 29 gauge. The thickness of 29 gauge, according to the AISI Tolerance Ranges for Galvanized Steel Sheets is .0142”-.0202”, average .0172”."
"For R-Panel, PBR panel, the...