They donated a large cage to the rescue where I volunteer. It held up for a couple of years, but I think they're more for the home than a commercial (zoo/rescue/etc.)
What kind of bird is she thinking of housing in it?
When we split it in three and used it for macaws, it didn't seem to work well, but it made a fabulous large budgie flight. We've also used different sized ones for iguanas and it held up well for them.