Igloos

There's a company the next town over that makes them things if that's what I'm thinking you're thinking about. They look about 6 foot square or maybe bigger?? That's just guessdamating. I see Delta and other airline logos on the side of them.

 

I got these off the Internet I think this is what he's talking about.these are what I seen at the Philly airport at ups and that repair shop I was talking about. Looks to be aluminum and plexiglass.

 

Back when TWA used to run 727's as freighters we used igloos that were the width of the plane. Makes for quick loading/unloading and the pilots didn't have to hire a lumper either. We had some 727 QC for quick change, they run in passenger mode during the day and at night they pulled out all the seats and hauled freight. The concept was solid, but if you had delays or cancellations in one direction, you would have to cancel a return flight. A big headache, especially in the winter.