Totally tracks. I first experienced these in Chicago, ie “the Windy City”. Every business has either these vestibules or a rotating turnstile type door. I didn’t get why until I came to a place without one and every time the door opened freezing cold air blasted in.

Really only protects you for about ten years. It’s not like they’re suddenly going to become repairable at the 5 or 10 year mark.