File talk:非常ドア (8401452825).jpg

this door is not useless...

This door is not useless. It is a "man-door" This man-door is a part of another, larger, overhead opening door. The other overhead door that you don't see is fully up and opened in this photo. You can see on the upper right corner of the man-door, there is a channel / slot to catch and align the overhead door that meshes with it when both doors are closed. The reason for the 2 doors is so that you don't have to open the bigger overhead door to pass through, you can pass through the smaller man-door. Google search: roll up door with man-door Charlotte240 (talk) 20:13, 1 May 2023 (UTC)