Oh Yikes! Thanks for that. I was planning on using the metal 4U and 3U endplates that Pulp Logic sells, but this changes everything. And maybe the 1U will look better at in intermediate angle... I could put the racks at 10,20 and 30°. I didn't really think of that.
Do you know of any 1U endplates that will fit the Intellijel 1U? Or do they just have some beef against DIY? I now realize that if I get 2x of normal 3U endplates, the 1U row will be need something the same thickness at each end or it won't fit snug..
EDIT: I found this rather obscure website that sells 1U mounting brackets for Intellijel format, so this could be it!
https://clicksclocks.de/