Inner doors special! 1969 freight elevators at Hamburger Meile shopping center, Germany

These Haushahn elevators have got a very special sort of inner door which appears to be a single-piece panel that can either move down or up to give way to the shaft door. I've never seen anything like this so far. This is a very special sort of door indeed. Recorded 24. March 2021 0:00 Introduction 0:24 Right elevator (medium-sized cab) 2:44 Left elevator (large cab)