They don't simply want a stainless steel box that keeps things cold. (fesmag.com)
It uses an 80 % high - strength steel box frame, higher - grade alloys and a high - strength steel bed floor to create a more durable and stronger truck. (sema.org)
My mind never gets tired of climbing through it, like those perimeter steel box columns in what was once an architectural marvel. (flashfictionretreats.com)