The file '28mm Scale Pressure Door 3D Printer Model' is (stl) file type, size is 22.7KB.
This is a single sided 28mm Pressure door for use on Science Fiction Scenery:
You can see how I use these items on my builds here:
https://www.youtube.com/channel/UC6LlnWCNjTAqoF8QBWwRsQw