About a year ago I designed as elegant of fix I could to the specifications of a particular company for cooling their servers. Since the cable tray was going to definitely be in the way in a couple other locations, the solution had to work with some other variables. Lucky for me I had Blender and could render my solution before fabrication [expensive] so that the customer could have an idea of how much space, and how obtrusive it would be.
Here is the original design from a year ago:
And here is the result:
As you can see, I did do a quick alignment of the render, but I changed NO dimensions of the design. The shop built perfect and the install went well and as planned. The great thing is that the top elbow and transition to round are supported by a heavy angle attached to the frame of the server and allow the door to be opened still.