Back Upright Attachment for Cable Tower

I have two of the plate loaded cable towers and lots of accessories. I originally bought two of these for the cable towers but failed to realize that if installed near a wall, I can't really use them for storage of things like the arms, safeties, plates on horns, etc. Bummer. I also bought the leg curl accessory. That's rather bulky and awkward so it has sat attached to one of the towers and if it's got plates on the curl portion you can't use the tower due to interference with the plates. So, now I've bought two more of these so I can space them off the wall after cutting them to use as storage for my accessories and to set up the curl station since as far as I can tell BoS only sells the smaller cages, not individual members, unlike the 3" stuff. So for my janky need, they should work. Also, they did make the cable towers feel plenty sturdy.