Cord reel mounting options

I use these: < /$_1.JPG> to provide more-readily accessible outlets in the garage, etc. It allows me to clutter the walls with floor-to-ceiling shelving (obscuring any outlets that may be located there) yet still have handy access to outlets (overhead!).
But, they were designed to mount on a metal frame (sturdy!) AND where there are no constraints on what lies "beyond" the frame (i.e., the frame can be alongside the reel and the reel can extend *backwards* beyond the frame!)
Adapting them to fit "ceiling mounts" has been sketchy. Most such reels either have a large frame surrounding/encasing them *or*, hang from a (swivel-)hook. No easy way to accomplish either of those things with these.
[the mounting flange is only present on ONE side of the reel!]
I was thinking, perhaps, some angle iron -- but much *taller* than wide? Or, a short length of a "tall" I-beam?
Any other suggestions?
I'll try to visit the metal shop this week and see what they offer by way of ideas. Maybe they can cut something to size for me and save the hassle...
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