Question on ATSF Bx -48 on the running board.  Ed Hawkins has U.S. Gypsum (expanded metal)  and Pierre in his kit 105.1 states Apex Tri-Lok.  Are both correct?  And, I do not know what the U.S. Gypsum expanded metal looks like. Does the term “expanded metal” give it a different shape than the open diamond pattern formed by stamping and stretching 12-guage steel which I believe is the same as the Plano Model Products #192 US Gypsum -Diamond pattern ( photo attached)?
Lester Breuer