I'm guessing you mean the support structure for the desk and shelves, which seem...

		cameron_b 9 months ago \| parent \| context \| favorite \| on: Multimodal WFH setup: flight SIM, EE lab, and musi... I'm guessing you mean the support structure for the desk and shelves, which seems to be a nicer version of something like https://www.uline.com/Product/Detail/H-4814/Wide-Span-Storag... or perhaps the same thing ( in several sizes ) with a coat of gloss paint