I had the wonderful opportunity to intern at Deck13 Interactive during late 2016. 3D-Models by Ramon Schauer.
This was my first task when I got to the job, designing a ventilation background prop that could be heavily reused and recombined around the gameworld without sticking out much.
There ended up being multiple variations of both props with differently colored decals on it to blend with the given palette of each level.
The ventilator has comically sharp and numerous blender-like blades to reinforce the feeling of hostility and industrial horror.