This model is designed to be done in a single print on a 255mm or larger printbed. The .step file is included if you would like to make any altercations to the model.
I printed using PETG at 100% infill, which was almost certainly overkill but I didn't ever want to risk warping or cracking. At 100% with support trees it was 718.5 grams and took 28.5 hours on my Bambu A1.
I would recommend using PETG, PETG is stronger, more temperature-resistant, and less brittle than PLA+ making it better for structural parts like a rack mount that may bear weight or face stress over time. However, PETG is quite stringy so be prepared to hit it with a light sanding once complete to break off those strung out pock marks.
In my application I was using reducer brackets to install it into a 19" rack. So I have not personally tested the fit in a 10"/11" rack. However, in version 2 I made all of the screw holes on rack unit standards.
The author marked this model as their own original creation.