I needed to run wire's from a reed sensor down a garage door opener to register if the door was open or closed without the chain wrecking the sensor wires. I took a few measurements and realized it would be easy to build a basic block that could straddle the upside down T shaped angle iron that my garage door runs.
Hopefully this helps if you ever have the same problem.
I also have models for generic reed sensor mounts if it's helpful.
The author marked this model as their own original creation.