A forum, this forum, any forum, would be the last place I would look for information on compliance of NFPA 70/UL508A codes for just this reason. At the same time how many home projects (most of which are what is on here) will be verified to be compliant.
I'm not looking for an enclosure. I'm inexpensive sources of enclosures, especially those I may not have thought of. It is obvious to me (should be to any that could answer the question) that anything made by Hammond, Saginaw, and Bud will not fit the bill of 'inexpensive source'. Good stuff, just not hobbiest or DIYer priced.