"Modern freight cars" by Jeff Wilson on page 68 shows a car like your picture. The narrative and caption indicate these cars were made by Thrall and Greenville in the 70s and 80s. The one pictured is a 100 ton at 65 feet long. Must be like the CNW in your picture. Wilson just calls them gondolas but he does describe the panels as corrugated. I am voting with falconservice -we name them corrugated panel gondolas.
Sorry, no help on a model that is made- I sure don't have one