Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Red Corridor Free.
Red Corridor v1.0
Nice sci-fi corridor for your levels. The entire hallway is 70K polys. Textures 2048px size, but you can downsize them to optimize scene.
Whole corridor is one mesh only! Door frame wall and door are separate meshes so you can continue corridor.
Materials reworked to new standard ones, added few props to make better scene. Added PostProscessing behavior file to have same look like in video.